Over the weekend, I noticed many reports from a wide array of search forums, where webmasters are noticing their PageRank scores drop in the Google Toolbar.
We have threads from WebmasterWorld, two from DigitalPoint Forums, and a Google Webmaster Help thread. All filled with complaints that their toolbar PageRank scores have dropped, many dropped to zero.
In addition, an update to the WebmasterWorld thread on the Google January 2009 changes was also noticed, where some are reporting shifts in the Google results. Here is one snippet from that thread that stands out to me:
Definitely a shift in whats in and whats out, i'm seeing some duplicate pages in the serp's indented duplicates at that, the first of these has a cache date of over a year and the indented results has a cache date of a few days.
Some of the pages that i witnessed drop out of there serp's on the 23rd Dec are suffering from this issue but not all, i'm assuming at the moment that this was the problem for those web pages, still seeing some funky page totals return for some very competitive search terms first page displaying 25 mil results return but if you dig deeper there are only 500 pages before the "omitted results" link comes up.