Posted by randfish

Today I’m happy to announce that we’ve just updated Linkscape’s web index (which also powers Open Site Explorer and the metrics via the mozBar) with fresh link data. You should see some bright shiny links we’ve found from late July to early August in this index (e.g. our own Beginner’s Guide now has lots of interesting link information). We also have some cool updates to the API, new partnerships and more, all covered below.

50% Improvement to Domain Authority

You may recall when we produced our correlation research this Spring, we showed that while Page Authority was substantively better than any other metric for an individual page’s importance, Domain Authority was much rougher (and only slightly better than homepage toolbar PageRank, i.e. pretty bad). We’ve been hard at work improving our models, adding data sources and writing code to help and this index is our first to feature an improved Domain Authority.

Thus, you’ll generally find that sites that perform better in Google’s rankings will have higher DA, while those that don’t do tremendously well are much lower. We also noted that a lot of the "bunching" of DA scores in the 60-65 range is now considerably better, with a lot more even distribution for "mid-performing" domains between 35-55.

Domain Authority Correlation
This chart from April, if re-done today, should show ~50% better correlation for Domain Authority to Google rankings (sorry I didn’t have time to make an updated chart)
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We plan to keep improving and hope to have even better numbers and overall index improvements by the end of the year. You can see more in this video on How We Calculate Page & Domain Authority.

New Partnerships

Many of you may have already seen the news that Linkscape data (via our API) is now integrated in Brightedge’s enterprise platform. Their software offers an impressive collection of analysis and recommendations, and they’ve shared a few screenshots with us:

Brightedge Product Screenshot

Like our beta web app, Brightedge’s software manages a lot of critical SEO data all in one place (but for much larger sites and organizations – customers include MySpace, VMware, and Symantec).

Brightedge Link Screenshot

They also do some really spiffy stuff with layering meta data onto links (like "blog, wiki, directory, etc." as descriptors of the type of links you’re getting). This isn’t yet in the Linkscape API (probably 6+ months away) – Brightedge is analyzing the sites and adding this data themselves!

You can learn more about the integration from Laurie Sullivan on Mediapost (the only inaccuracy I saw was SEOmoz offering "consulting services" – something we haven’t done since 2009) or by contacting Brightedge directly.

We’re also psyched about integrations with several other tools and data providers including:

  • Flippa – the web’s leading site for buying and selling web properties now integrates Linkscape metrics in their due diligence section
  • Link Research Tools by Christoph Cemper
  • Raven Tools – an impressive suite of tools for managing SEO processes that now employs Linkscape metrics in their link analysis section

We’ve previously integrated with other tools and platforms from folks like Hubspot, Conductor, Authority Labs and many more. If you’re interested in the API, you can get a free key to use it (up to 1mil calls/month) here and see lots of code examples on our API wiki.

Improvements to Anchor Text

 If you ran previous link reports or have used our API, you likely had the same frustration as infamous SEO rockstar, Greg Boser (of 3DogMedia) as illustrated below:

Greg Boser wants Capitalization Agnostic Anchor Text

We’ve gone ahead and made this change, so that anchor text from Linkscape’s API and the tools it powers (Open Site Explorer, et al) are now capitalization agnostic. This means words that appeared in differently capitalized ways in link anchor text will be consolidated to a single version. For example, we may have previously shown different quantities of links for the anchor text:

  • SEO
  • Seo
  • seo

Following tonight’s update, these will all be treated as "seo" and consolidated. This should make Greg and a lot of other SEOs, considerably happier. :-)

Index Stats

This month, as always, we’ve got a new index with freshly crawled pages and links. Stats are as follows:

  • 41,362,566,619 (41 Billion) Pages
  • 366,305,174 (366 Million) Subdomains
  • 96,445,118 (96 Million) Root Domains
  • 409,355,797,533 (409 Billion) Links

Some other interesting numbers this month include:

  • 5.1% of URLs contain rel=canonical – the highest yet!
  • 3.1% of URLs contain a meta noindex directive
  • 2.06% of all links are rel=nofollow
    • 57% of rel=nofollow links are internal (pointing to pages on the same domain)
    • 43% of rel=nofollow links are external (pointing to pages on different domains)
  • 84.9% of all links are internal (linking to pages on the same root domain)
  • 87.5% of all links point to pages on shared c-block of IP addresses

Look for even more exciting things from Linkscape over the next few months, with some really big, exciting improvements to freshness and coverage by year’s end.

And, as always, feel free to give us any feedback you’ve got!

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