Just a quick FYI that Google has just run the second 2011 PR update.
Something is going on with this update, massive shifts in PR have occurred on multiple of my domains that have been stable over the last 3-4 updates in 2010, additionally I don’t think that they have all been hit up yet.
Most of my domains received an increase including my online surveys domain, going up to a PR4 from PR0.
I believe the main thing that is holding the PR of my domains in place (or increasing them in many cases) would be the large number of high PR in content home page links that each of them have.
From a fairly quick observation, the old saying that “the PR of your site cannot exceed the PR of your highest in bound link” still remains true. After running an inbound link report on a couple of the domains that lost PR, I can see that they have dropped to the same level as the highest PR link pointing to them e.g. one of my PR6 domains that’s highest PR links is multiple PR5′s (including .gov links) has dropped to PR5. Same case applies on the domains I have seen increase.
I will post more on this later but for now go check your site out and see what the PR is. I would be interested to hear how your sites have moved and what you feel was the reason it shifted in either direction.

June 27th, 2011 on 12:51 pm
Nice find Simon! Didn’t even realise and have seen some interesting results
June 28th, 2011 on 12:22 am
Thanks Stefan, it was solely by chance that I found this so fast, but I guess it is a testament to how much time I spend looking at pointless stuff haha.
Thanks for emailing my quite possibly my crappiest post around to 40 odd people also
June 27th, 2011 on 2:19 pm
Good find mate and nice post. One of my websites has gone from a PR0 to PR2 which is interesting considering in 2010 it dropped from PR2 to PR0… what’s Google playing at?
Now although Google claims that PR is no longer heavily weighted in the ranking algorithm, after a few quick searches on different key-terms, I’ve found that those at the top of the rankings have the highest PR. Interesting… very interesting…
June 28th, 2011 on 12:56 am
It appears that this is still occurring in this update Forz, a couple of the domains dropped to zero when clearly they should not have. Maybe it has something to do with what data centre your on when the update happens? (clearly I am running out of ideas)
I agree that PR is not part of the ranking algorithm like it once was, however PR is still a google calculated reflection of domain authority with the exception of authoritative sites that drop to zero for no reason.
So you will find all those guys that are ranking well with PR also have quality links, content and domain age some pretty heavy ranking factors.
June 27th, 2011 on 2:23 pm
My movie site went from PR0 to PR3! And yes it does have a PR4 and a PR3 link supporting it.
June 29th, 2011 on 10:37 am
Your comment got trapped by my span filter Karl. You have been doing a little too much scrapebox blog commenting by the look of it and are now Akismet flagged
Your movie site is just awesome, i would give it a PR 3 even if it didn’t have high PR links
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June 27th, 2011 on 11:15 pm
Had to check my sites after reading this (and I probably only touch them once a month..but whatever I do write is unique) – Both sites went from PR0 to PR1 and PR3. Huzzah! Could have sworn they were only 0 a week or two ago.
June 28th, 2011 on 1:44 am
Congrats Paula! that’s an awesome result and would be testament to your writing skillz, google must highly value your content.
Your sites PR will generally only change 2-3 times a year in line with the Google PR updates, though minor fluctuations can be seen outside of these in rare cases.