For the past few days, the Google Tool Bar has not been displaying Page Rank. Rather, it has been blank, as if the page has no page rank what so ever.
Google was in the process of doing a backlink update (codenamed “Bourbon Update” by the people over at WebMasterWorld) and as such, no page rank was displayed at any sites, including Google homepage. I am sure quite a few webmasters were shocked when they visited their site and the green bar was not displayed.
With the backlink update now finished, the page rank is back to be being displayed. Personally I haven’t noticed any major changes on the sites that I visit but if you have, feel free to share your experience. Both positive and negative.