There was a PR update yesterday. As usual there were "winners" and "losers".
As most people know, PR doesn't matter a lot now and it's not the main determinant of the Google algo, but it's still followed quite seriously because people see it as an indicator of backlink building efforts paying off ... and it does influence how much advertisers pay for ads.
As seems to be normal of recent PR updates, there's something quite screwed up with how some pages are gaining/losing PR. PR now bears no resemblance to how it originally worked. First, there's nofollow. Links using the nofollow tag are supposedly discounted by Google and don't pass PR. Also, some pages - such as privacy pages and pages called links.xxx - are blocked by Google from showing any PR and there are a few other exceptions.
Even accounting for that, there's a problem with how PR seems to be flowing - it flows too fast sometimes and not at all at other times. Reports abound about new pages getting a PR3 despite having just one link from a PR0, and pages with several high PR backlinks not rising in PR at all.
The main forum page on here has gone from a PR3 to a PR4 despite the fact that we haven't acquired any big new links ...and the main links to this forum (from the site in my signature) haven't changed visibly in PR. In fact, PR of our main page should have declined because as number of threads increase internal PR is being spread more.
Some users have acquired PR to their profile pages like crabfoot and I, but members who have roughly the same number of posts like grynge and Kay seem to have been treated differently with some profiles getting PR and some ... not! KenW3's (join date June 2011) profile page has gone to a PR3 from his 199 posts while benitez17's (join date: Jan 2010) profile page still shows no PR despite his 1470 posts. There could be some logic to what Google is doing ... or they could have thrown some element of randomness into the allocation of pagerank.
This is how some sites have fared.
Webmasterworld (home): PR6
DigitalPoint (forum home): PR6
Google.co.uk has dropped from a PR9 to a PR8 and some major edu sites that I follow have dropped a notch or two. Adobe and Apple have both dropped from PR10s to PR9s.
What have you noticed about the PR update and how have you fared?