Google has made a change in how they categorize internal and external links in Google Webmaster Tools. A post on the Webmaster Central blog goes into detail (while generating a few more questions along the way.
Here’s the gist.
- WWW and non-www sites are treated as the same site
- Sub-domains are now treated as internal links
This chart shows how these changes will look.
Google assures webmasters that this will not impact the total number of links that the webmaster will see but it will reclassify many links from internal to external and vice versa.
We live in a data driven world and the more accurate the data the more accurate our work (in theory).
How do you see this impacting the SERP’s? Google has given no indication as of yet but nothing is done in a vacuum with Google these days.