How often does pagerank get renewed. Is this constantly happening or do all sites get updated at specific time intervals? ie. once every 3 months?
PR is updated almost constantly. Days at most not weeks or months.
What you see in the Google Toolbar is not your real PR, and is up to months out of date. That’s only updated every several months.
Thanks! Is there a way to see what your up to date PR is?
No, there is never a way to see your real PR. That’s Google’s secret, they’re not going to hand it out to the competition so they can compare their algorithms 