After posting recently on the changes in Google Backlink counts, PageRank and indexed web pages noted by webmasters, Matt Cutts has issued a Google Infrastructure Report.

Here’s a summary of his post:

PageRank & Backlinks
The Google PageRank scores shown on the toolbar and in other locations are currently being updated. Matt suggests this shouldn’t impact rankings, as the scores are already being used in the ranking process. This data push will also see Google operators such as link: and info: updated. So this would explain the Backlink count updates that webmasters have been noticing.

Supplemental Results
The situation where the site: command was displaying supplemental results ahead of regular results has been resolved. Matt reinforced the fact that supplemental results are not a penalty, and that they are determined by a web page’s PageRank. He expects the supplemental results to get fresher and provide more traffic for website owners.

For those of you with supplemental results Matt stated:
“The approach I’d recommend in that case is to use solid white-hat SEO to get high-quality links (e.g. editorially given by other sites on the basis of merit).”

Homepages not Displayed in Country Specific Google Queries
An issue that was supposedly addressed in December which saw homepages not being displayed in country specific Google results is being addressed also. If you were to run a site:yourdomain.com operation in google.co.uk, the homepage would be displayed, however if you were to narrow the settings to UK specific sites, the homepage would not be displayed. The fix being worked on will resolve this issue.

So it appears the Google backlink count, PageRank and page indexing issues that were being discussed in the forums are actually a part of some official Google work being carried out. If you want the detailed explanation of what’s going on, visit Matt Cutt’s blog for the full run down.