Beranda » SEO » Cara Cek DA PA di Tools SEO & Mengenal Faktor Penentunya. Domain Authority is a domain score developed by Moz to predict a website’s chances of ranking on search engine result pages (SERPs). But if you’re still shopping around, keep these two elements of a good domain in mind. The general authoritativeness of the referring website. " 例えば、ahrefs. With the increasing costs of acquiring backlinks, this is a huge benefit. not to be confused with PageRank ). Price: Free for MozBar, $99+ for MozBar Premium (included in all paid packages) Since Moz is the company that created Domain Authority, many people rely on MozBar to help them find out their domain score. What’s new at Ahrefs? (Feb 2023) We have some really exciting updates this month: Organic search view in Overview 2. Clean the dofollow_ref_domains column, which tells us how many ref domains the site. The goal of creating SEO content is to rank high on Google. Ubersuggest has a free version that is useful. One of the most widely used and essential traffic analysis tools is Google Search Console. Domain Authority scores range from one to 100, with higher scores corresponding to greater likelihood of ranking. No, Ahrefs doesn’t come with a free trial. Klik menu Site Explorer pada dashboard, lalu ketik domain yang ingin kamu cek pada kolom. The free tool above shows your website’s. Powered by industry-leading link data. How to check . The average DA of a blog with its domain name is between 30 and 40. Neither of these you can access with the extension and AHREFs doesn't have equivalent tools. Ahrefs doesn’t have this feature, though it does show you which of your backlinks have the lowest domain authority. It’s a mini-search engine within Ahrefs that you can use to find brand mentions by searching: Your brand name and then ‘-site:yoursite. Product Blog. The tool will show you the Domain Authority and other relevant scores and comparisons. (Tool suggestion: SEO competitor checker) Step 2. Increasing the Domain Rating (DR) in Ahrefs or any other similar SEO metric is. Which shouldn’t come as a surprise, because Ahrefs’ Domain Rating metric (shows the strength of a website’s backlink profile) correlates well with Google rankings. C. Ahrefs is another popular SEO tool that can analyze the domain authority of your website. Every webpage has a certain amount of “authority” called PageRank (PR). If you do need more features and more search capacity, we offer a package as low as $29/month. Find contacts for your prospects. This data comes from our database of ~500 million keywords (updated monthly). com The first and most obvious possibility is just the shape of the model itself. Domain authority is measured on a scale of 1 to 100. In your experience, is there any direct correlation between Moz's DA and AHrefs Domain Rating. The tool even provides information about the number of unique backlinks, root domains, and number of keywords ranking for a specific domain. So in this guide, I will show you the link building methods that we used to achieve this massive growth. Ahrefs SEO Toolbar is a free extension for Chrome and Firefox that provides valuable SEO data about the pages and websites you visit. The highest mark represents a site’s best ability to rank better. Google will write one for you if you don’t have one or sometimes rewrite yours even if you do have one. Domain Rating is an important component of Ahrefs Authority Score. Stand out in prospects’ inboxes. Get a better understanding of your website’s SEO potential with the help of actionable SEO metrics like Search Volume, Keyword Difficulty, and Traffic Value. e. Crucially, Ahrefs uses its own proprietary ranking called “Domain Rating”, instead of Moz’s “Domain Authority. Translate, then optimize. So let's find out where the differences lie. The whole point of prospecting is to find sites to approach via outreach and acquire links from them. It ranges from 0 to 100, with higher. The free tool above shows your website’s “authority” as calculated by Ahrefs (i. Use this report to find the highest-value backlinks in your portfolio or your most common referring domains. From there, you could investigate each site to see if it’s a potential problem. Q6. Also called domain authority, this is a search engine ranking score. So, every time you link to an affiliate offer you’re also linking to one of these tracking domains. If PharmaCare approves this Special Authority request, approval is granted solely for the purpose of covering prescription costs. It describes the relevance and credibility of the website in a related niche. This isn’t included in the Moz equivalent. However, when many SEO professionals use the term “keyword difficulty,” they’re referring to the broader concept of. And SEMrush’s study agreed as well: “The higher the domain’s position on the SERP, the more referring domains it has. Broken links. It’s the second largest crawler on the internet, after Google, and it can help you discover the most minute details about keywords, ranks, SERPS, and backlinks. According to Ahrefs’ Site Explorer, the website receives ~2. Anywhere between 20-30 is getting there and between 30-50 is good. Anchor Text Ratio. 1. A single-page website contains all of the site’s content on only one landing page. Anchors: A breakdown of the most commonly-used anchor text in a site’s link profile. You can toggle the backlinks chart to show the top anchor texts used for your links. Majestic has by far the cheapest paid plans: (Starting at only $50 per month. Moz Link Explorer. Translate, then optimize. Traffic share = topic share aka “topical authority”. Use internal linking to improve the ‘authority’ of important pages. Here at Ahrefs, we have a website authority metric of our own called Domain Rating. 2. Our FREE Domain Authority Checker Tool (powered by Moz) will tell you a site’s DA, page authority (PA), ranking, and the number of external links. Add all your competitors to the bulk Domain Authority checker. Ahrefs is considered one of the best SEO software, but other SEO tools may be better for your business needs. Ahrefs DR is based on the number and quality of. This website ranking measure is determined on a logarithmic scale, and the score ranges from 1 to 100, 1 being where all new websites start and move on up from there. Step 3. Its free features include: On-page SEO report. Probably the closest competitor to SEMRush, Ahrefs is very similar to SEMRush in terms of features and overall functionality. Think about it; there are only a handful of websites in the world with millions of backlinks (Twitter, Facebook, YouTube, etc. SEO Powersuite. Keyword research is finding which search queries your target audience is typing into search engines like Google when looking for products, services, or information. The more backlinks a website has, the better its domain authority (DA) or domain rating (DR) — and authoritative websites tend to garner a lot of links. To use the Ahrefs Domain Rating Checker, simply enter your website’s URL and click the “Check Rating” button. In the Include box, enter terms like “course,” “academy,” “training,” etc. You’ll know quickly when to make pivots because the data will let you know errors right away. Get links to more pages. 1. It runs on a scale from zero to a hundred. Here are more features that make Ahrefs’ Backlink Checker special: See followed and nofollowed links — The more quality followed backlinks a site has, the more trustworthy it is in the eyes of Google. Our da checker will create the domain authority report within instants. It is a similar metric to Domain Authority and Domain Rating, but this latest update is designed to provide greater accuracy and be more resilient to manipulation. 1. A new and improved traffic estimation. e. However, Moz Domain Authority and Ahrefs Domain Rating are two similar metrics but differ in a few critical ways. You can calculate domain authority score with the help of free tools available online. To that tune, if you rank, say, #10, your SEO visibility is at 2%. Traffic Value. Domain authority (DA) represents how authoritative a website is on a scale of 0-100. Maximize your return from Google ads. Sebelum menggunakan fitur ini secara leluasa, kamu dapat melakukan pembelian tools ini pada versi premium. Moz Features: Keyword research tool – Moz offers an easy-to-use keyword research tool. ; 2. This is largely niche dependent, but once you establish topical authority, generally speaking, you’ll need fewer backlinks. Ahrefs Domain Rating Checker Ahrefs is another popular SEO. com のドメイン評価は 88 です。. Add all your competitors to the bulk Domain Authority checker. Social metrics. 1. Look through the report and see if there are any courses you can create by repurposing your content. Domain Rating shows the strength of a given website’s overall backlink profile. It runs on a scale from zero to a hundred. These nitty-gritty details reveal where your website needs some TLC, transforming your overall ranking, website traffic, and domain authority. Content. Create high-quality content (that people want to read) Domain authority can be likened to the influence of an expert within their own discipline and in the larger scholarly community. That’s how we come to our total domain count of ~175 million. From head terms to long-tail phrases you’ll get hundreds of suggestions from our free keyword research tool. AhrefsA good domain authority (DA) score can vary depending on the industry and competition. Rule #3: Use the correct domain version (HTTPS vs. Then I am Here to Boost your Ahrefs Domain Rating. Semrush is a marketing platform that can help you boost your SEO, content marketing, and social media marketing. It runs on a scale from zero to a hundred. — into a single DA score. AhrefsFor example, my backlinks article has a ~ 44 UR. ”3. They don’t impact rankings. Semrush is the usual go-to alternative for Ahrefs. Ahrefs used to have a straightforward pricing model: if you signed up to Lite, you got featured in Lite. We then zoomed into these 5. Ahrefs does offer a bunch of SEO tools for free, such as a broken link checker, a website authority checker, a keyword rank checker, etc. The stronger the domain is, the higher the score it will get. Increase Domain Authority of your site DR 50+ in 30 day. Having subdomains is helpful for keeping a website organized. With the help of Ahrefs tools, you can compare domains side-by-side by analyzing their backlink profiles, untapped keywords, and pages worth building. , Domain Rating). The company offers a website authority checker, where you can examine a similar metric to the “DA” from Moz. Our company’s SEO strategy is fully based on Ahrefs’ tools and tutorials. Keep in mind the traffic estimation will never be perfect or 100% accurate. And more!Domain Authority. Jika menginginkan hasil pengecekan lebih lanjut, maka kamu harus membuat akun dan berlangganan fitur Ahrefs. Ahrefs Tops in Keyword Research. Look through the report and see if there are any courses you can create by repurposing your content. It ranks every website’s. Ahrefsは、私たちのチームが毎日使っている実用的な洞察への扉を開いてくれ、数え切れないほど多くの方法で私たちのSEO戦略を強化してくれています。. Language: English to remove those who won’t understand your pitch. What is domain rating? A domain rating is a metric developed to help predict how likely a domain, subdomain, or page will rank in search engine result pages (SERP). Ahrefs introduced Domain Rating, and Moz introduced Domain Authority. But you can use last month’s organic traffic as a benchmark. Our comprehensive data allows us to provide reliable estimations of a website's organic search traffic in Google. Content. Optimize Web Structure. This metric was initially developed by Moz . Let’s explore the strengths and weaknesses of both tools, helping you make an informed. Both Have Strengths in. It's a very good alternative for Surfer, but if you want keyword volume, domain authority data, you need to buy (in case of two codes) a $35 subscription for SEO addon. It has a 30-day free trial and pricing starts at $99 a month. nositelinkssearchbox - Prevents Google from showing a sitelinks search box in the search results. Let’s take a closer look at what happened. Pick the best keywords for your PPC campaigns and write copy that stands out. Moz uses different factors to calculate this score based on a sample of links to a website or page. Ahrefs has been a must-have in my marketing toolkit for many years. Depending on your business, most of your traffic will come from Google, and search rank will depend on a key metric called Domain Authority. Unfortunately, Ahrefs recently switched over to usage-based pricing. To check your organic traffic in Site Explorer, you can: Plug in your domain and scroll down to the Overview 2. Use Google Ads data. Generally, a score of 40 or above is considered good, while a score of 50 or above is considered excellent. Check Benefits. It’s a better judge of the number of eyeballs a site is getting than DR. Semrush: Best for Power Users. For web applications: 1. Simply enter a domain name to get the top-ranking keywords. Related: List Of Top Bulk DA Checkers. Ahrefs Domain Rating Checker. 多年来，Ahrefs一直是我的营销工具包中的必备工具。. An exclusive Semrush Trial that lasts for 14 days, whereas Ahrefs stopped offering its 7-day trial for $1. For example, ahrefs. This feature lets you analyze any domain URL. Here at Ahrefs, we have a website authority metric of our own called Domain Rating. Link building is the process of getting other websites to link to pages on your website. com to get SEO metrics. It is simple to improve the domain authority and page rank, but an SEO can use some effective strategies to boost the website ranking in the search engine results. Trust Flow vs. However, they offer free access to Webmaster tools including the Site Audit and Site Explorer tools. There are. The concept of UR is similar to Moz’s Page Authority (PA) metric. DA – Domain Authority (MOZ): Domain Authority (DA) là một số liệu xếp hạng công cụ tìm kiếm được phát triển bởi Moz nhằm dự đoán mức độ xếp hạng của một trang web trên các trang kết. ベンチマーキングで競合に対抗しましょう. Domain Authority isn’t a ranking factor itself (e. 200k+ SEO professionals across the world use it in their daily work. But our data doesn’t support that. Here at Ahrefs, we have a website authority metric of our own called Domain Rating. Because in the SEO world, domain authority (also called “domain rating”) is often viewed as the be-all and end-all of what it takes to rank. com のドメイン評価は 88 です。. To discover unlinked brand mentions, you can use Ahrefs’ Content Explorer. Unlike multi-page websites, the user is unable to navigate to content on separate URLs via internal linking. Subdomains. Single Grain is a leading, full-service digital marketing agency founded. The better quality backlinks you accrue from other sites with high DR, the higher your DR will become! 8. A ferramenta gratuita em cima mostra a "autoridade" do seu website calculada pela Ahrefs (ou seja, Classificação de Domínio). e. Discover your organic competitors in search. The higher that number is, the more. It is based on various factors, such as the quality and quantity of your backlinks, your. View. HTTP) If you switched over to SSL, make sure that you don’t declare any non-SSL (i. The tool even provides information about the number of unique backlinks, root domains, and number of keywords ranking for a specific domain. Keep reading, and I’ll show you eight ways to build links using ethical strategies and SEO tools that will make things easier for you. Berikut panduan ahrefs yang bisa kamu gunakan untuk menganalisa backlink kompetitor dengan ahrefs. Because of its extensive backlink data, I find its domain authority data and referring domains better than Ahrefs. Domain Rating from Ahrefs, Domain Authority from Moz, and Trust Flow from Majestic are all tools that try to figure out what Google is thinking. An example of this is Amazon. Putting your site’s domain into the OSE shows you a list of backlinks, ordered by authority. Keep running through the process above to continually increase your website authority and improve SEO. Choose the “Phrase match” keyword ideas report. Its free features include: On-page SEO report. Domain authority (DA) is a metric that measures how likely your website is to rank well on search engines. 3. io (Free) Moz PRO (Paid) SerpStat (Paid) Plus, a few other free SEO tools (at the end) worth mentioning. Q2. The paid Ahrefs plans start from $99 per month. As with most other domain analysis tools, you start by creating an account, entering you or your competitor’s domain address, and clicking ‘Go. Domain rating menunjukkan kekuatan backlink sebuah website. And the top 50 related questions. Use the interactive graph to see how traffic has progressed both globally and locally in 171 countries. I will help you to increase Ahrefs DR with. The score is solely based on the quality of links going. An exclusive Semrush Trial that lasts for 14 days, whereas Ahrefs stopped offering its 7-day trial for $1. In fact, the #1 result in Google has an average of 3. Overall Website Performance Requires Both. PharmaCare approval does not indicate that the. KPIs are industry statistics you can use to measure performance over time and give insights as to how effective your SEO campaign is. See the web like search engines see it (for real) When we say you can search through yep. From Ahrefs you have a 'Domain Rating' of 82 which is really strong. Number of backlinks. ) 🔸 Structured data (schema) checker 🔸 Broken link checker 🔸 Link highlighter 🔸 Redirect tracer 🔸 User-agent switcher 🔸 Country changer for search results 🔸. Offers expensive pricing;. Pricing is relatively low; $25 per month to track a single domain, two competitors, 2,500 links, and 50 keywords. The higher a website’s Domain Rating (DR), the stronger and more authoritative it is. Redirect tracer with HTTP Headers. While Google never revealed the exact formula for determining website scores, studies over ten years show that the more quality backlinks lead to a website, the better the score. The above image is from a small business that earns a healthy 34 Domain Authority rating, while the image below is from a large business that earns an impressive 89 Domain. Ahrefs’ own experiments have shown that the authority of each individual page (its URL Rating) has much higher correlation with Google rankings than the authority of the whole domain. Like if a website has 80 DA then it has more authority as compared to a 20 DA website. Domain Rating (DR): URL Rating applied across an entire site (this is basically the equivalent of Moz Domain Authority). Once you’ve established there’s been a Google update, you’ll need to check its date against your total organic traffic to see if there’s been a drop at the same time. In conclusion, Ahrefs is a powerful tool that can help businesses to improve their domain authority and increase their visibility on search engines. There are several ways you can measure the authority of a domain. Ahrefs Pros. ) It would take a lot of effort for those sites to outrank each other in terms of Ahrefs Rank. 4. 1. Just as this well-respected professor can wield a great deal of influence over. It is a project tool, so you need to set up a new project for it. , Domain Rating). For rank tracking, SEMrush has a tool called Position Tracking. ”. 95 cheaper than SEMRush’s offers. Guru: $249. Try Content Marketing Toolkit. Walkin’ Pets BlogDogTipper is a blog by Handicapped Pets for pet parents with disabled, senior, and special-needs pets. Today, we update our index with the freshest backlinks on the web every 15 minutes, and our crawler processes up to 8 billion. Rank Tracker – Our most popular solution for. Super useful to analyze your website as well as your competitor’s links. If you are in a boring niche, getting high quality backlinks can be challenging. If you want to track more than one domain, it's $25 per domain, with some additional discounts the more domains you want to track, and higher limits on the links and keywords tracking. But generally speaking, it refers to the technical SEO health of your site. 1. Check Domain Authority With Moz. As an employer, you have a responsibility to keep workers healthy and safe at your workplace, regardless of the size of your business. Hit “Compare”. Mangools/KWFinder: Best Value. 1. Advertising data in the Semrush domain overview. But this functionality goes beyond mere keyword suggestions, it also touches on relevant keyword. But the name and theme of the domain closely matched our target - that was the only really good thing about it. Boost page authority with internal links. Site Explorer. Cara cek DA dan PA jika kamu sudah berlangganan di Ahrefs adalah sebagai berikut: Kunjungi Ahrefs dan login ke akunmu. ; This means there is ~17 times more TP for a South Korean travel guide than for a Singaporean travel guide. Understanding the components of Ahrefs Authority Score Domain Rating. Redirect tracer with HTTP Headers. With DR and DA, a site is given a ranking from 0 to 100. 在 Ahrefs 中，我们有一个叫做 referring domains（反链域. Ahrefsは長年にわたり、私たちのSEOツールベルトの中で最も重要なツールです。. Fast and Helpful Support: My one contact with Majestic’s support team impressed the pants off of me. This flows to other pages via internal and external links. 1. Semrush’s authority score metric is comparable to Ahrefs’ domain rating metric. In particular, these are the correlations each of the metrics scored: Domain Authority (Moz): 0. 3/ See keywords that bring you traffic. Translation: We’re discovering new broken links all the time. The difference (delta) between the number of referring domains on the start date and the end date of the data range. For example, just paying for a. These nitty-gritty details reveal where your website needs some TLC, transforming your overall ranking, website traffic, and domain authority. Moz DA ranges from 1 to 100, with higher scores equalling a better domain (aka a better chance of ranking highly). Ahrefs has become a popular tool for monitoring and analyzing domain authority, but how often does this metric actually get updated? Let’s dive into it! **Overview of Ahrefs Tools and Features** It does not show you an in-depth analysis of backlinks. We use Ahrefs to better track our SEO performance and keyword rankings. Domain Rating (DR) is a ranking metric developed by Ahrefs which shows the strength of a website’s backlink profile on a scale of 1 to 100. ahrefs_top int − + Ahrefs Rank of the target domain. . target_ahrefs_clean_dtypes = target_ahrefs_raw. Select the location you want data for and you will be given a list of up to 700 related keywords. Domain Authority (DA), on the other hand, is a metric developed by Moz that is a predictor of how well websites will rank on search engines. Ahrefs Ahrefs Review & Tutorial 2023: How To Create Content That Sticks & Build Links That Count. From this, we can see: The KD is lower for “south korea travel guide” than “singapore travel guide. Along with its keyword research tool, SEMrush has a unique feature Ahrefs doesn’t have. Ahrefs Tops in Keyword Research. Alan Derecelendirmesi). DA predicts how well a given website will rank on the SERP. Here are 10 comparisons these professionals highlighted regarding Ahrefs and Moz as domain authority checkers: Ahrefs Has the Edge With its Visuals and Trend Tracking. Check for 140+ SEO issues. The competitor analysis tool of Semrush gives you more in-depth data on your competitors, whereas Ahrefs doesn’t offer in-depth data on your competitors. As well as the websites linking to you, whether they are dofollow or nofollow and a lot of other useful data. 13. See pricing Use the. Use Rank Tracker by typing in the domain you’re interested in testing and some keywords. Q3. Domain Authority and its page-level equivalent Page Authority – DA and PA – are two of the best-known and most respected metrics in the SEO industry, widely used to rate a domain or page's rankability. Does Ahrefs come with a free trial? A. For a more in depth. Ahrefs: A powerful SEO tool that offers a variety of features for competitive research, such as keyword research, backlink analysis, and competitor traffic analysis. Learn what keywords your website ranks for and compare how you stack up against competitors in the SERPs. , HTTP) URLs in your canonical tags. 3. Get more referral traffic. Ahrefs DR. The competitor analysis tool of Semrush gives you more in-depth data on your competitors, whereas Ahrefs doesn’t offer in-depth data on your competitors. Duplicate content. A domain authority (DA) score is an automated score developed by Moz that's produced by an algorithm that judges the strength of a website in terms of its ability to rank. It also 301 redirected several expired domains with high DR to its domain. Domain Authority: The Moz domain authority (DA) Checker provides a score from 1 to 100 that predicts how well a website will rank in search engines. Price-wise, Ahrefs also offers similar package plans to SEMRush. According to their. Ahrefs SEO Toolbar provides a bunch of free features. Identify target keywords and incorporate these as you translate. Site audit tool – Perform a complete site audit to see how your website is doing in search. com below: As you can see, this is a middling domain without a lot of strength. Outgoing links reports We’ve. Municipalities in B. Some SEO platforms like Moz, Ahrefs and Semrush use a metric like ‘Domain Authority’ or ‘Domain Rating’ to reflect the overall strength of a domain. Ahrefs does not have a PageRank equivalent, but URL Rating (UR) is the closest option. It's called Domain Authority. Click on the "Tools" tab. Domain Authority is a metric developed by Moz. It is a score on a scale of 1 to 100, with higher scores indicating a stronger and more authoritative domain. Choose Any word. 33 per month when billed annually. The term “logarithmic scale” means that the gap between DR 70 and DR 71 is much bigger than the one between DR 20 and DR 21. DR (domain rating) is Ahrefs’ Domain Authority metric. 2. Ahrefs for links/competitors, AccuRanker for tracking positions, homemade spreadsheet for keyword research and Screaming Frog for on-site. A2: “Ahrefs Rank is more volatile at the lower end of the scale. The Domain Authority (DA) metric is built on Moz's industry-leading web index trusted by SEO professionals worldwide. For instance, a DA of 50. I'm looking to move away from OSE as my main site crawler/backlink analysis tool and really like the look and feel of AHrefs, however our company is very keen on utilizing the Domain Authority metric. Moz. 95 when billed monthly or $208. In this article, I’ll go through three tools you’ll need to get both jobs done (and even a bit more). The majority of them managed to achieve that in approximately 61-182. com の Domain Rating は 91 です。. 3. Cek DA PA dengan Ahrefs. Don't forget to save 20% on annual billing. Ahrefs is an all-in-one SEO toolset for growing search traffic and optimizing websites. But in terms of pure features, Ahrefs and SEMrush are pretty much tied. For example, immediately on the domain overview, you’ll see an Authority Score and the distribution of traffic via country. Here at Ahrefs, we have a website authority metric of our own called Domain Rating. com. Crucially, Ahrefs uses its own proprietary ranking called “Domain Rating”, instead of Moz’s “Domain. Here are 10 comparisons these professionals highlighted regarding Ahrefs and Moz as domain authority checkers: Ahrefs Has the Edge With its Visuals and. If you do need more features and more search capacity, we offer a package as low as $29/month. Outside of Ahrefs being a great source of search data, they’re one of my top tools due to them listening to users and constantly improving their tools. This site used an expired domain and created People Also Ask (PAA) spam content. Another method is to use the “traffic value” metric in Ahrefs’ Content Explorer to find the potential value of the traffic going to sites in a given niche. The authority of the referring website (as calculated based on its backlink profile). Ahrefs is the closest you can get to an ‘essential’ tool if you are a serious content marketer or SEO. This can help you identify relevant sites with high domain authority and high-quality. Here’s the quickest way to find keywords with search traffic potential: Go to Ahrefs’ Keywords Explorer. Ahrefs – No special discount, but you can get a ~20% discount on an annual subscription. If you’re a beginner and want to get a feel of keyword research tools, give it a try. Ahrefs is an all-in-one SEO solution tool; Offers advanced keyword & content strategy; Advanced backlink research tool; Rank tracker; Offers a domain rating score; Ahrefs Cons. We would like to show you a description here but the site won’t allow us. AR ranks websites in the Ahrefs database by the size and quality of their backlinks, while Domain Rating shows the strength of a website’s backlink. Step 3. 4. The more links there are on the page that links to you, the less authority will be transferred to you because it’s shared between all of those pages (due to the PageRank algorithm). Number of referring domains.