We're seeing a Google Toolbar PageRank update that happened about 20 minutes ago (July 29, 2009). Many of our top level pages have jumped in rank as a result of this latest update.
Also, our take is Google has started to update Toolbar PR more and more frequently. By my count, this is the fourth update in 2009. Note that in all of 2008, there were a total of five PR updates. So if this latest TBPR update is confirmed, Google is clearly updating more frequently and we should reach seven or eight updates by year's end.
For reference, Google PageRank is a link analysis algorithm (named after Larry Page, co-founder of Google), which Google uses to assign a numerical weighting to measure the authority, value or importance of a webpage. Nobody outside of Google knows the actual PageRank of a document.
Toolbar PageRank, on the hand, is the little green pixel bar, which displays on your toolbar. Something Google says is "for entertainment purposes only." Sure Toolbar PageRank may be suspect metric, but it's all we've got to go on because Google's not giving us a peak at the real one.
Either way, I'd be very curious to know if anybody else seen evidence of this latest PageRank update or any resulting changes in their keyword rankings ?
Please share your comments.
(Read more: Google SEO Guide: The Ultimate Google SEO Resource )