i would like to know if Live pr plays a role in a site`s rank position or does Toolbar PR which does this .. and also how often Live PR updates Seeing the popularity of the "PR update thread" , i am a bit confused as it is mainly about Toolbar PR and not live PR which sites already have. The role of Toolbar PR Is to 1) determine how well your site is ,ie to rank your site 2) To get good high PR backlinks 3) For business purposes. Is there any more uses of Toolbar PR? I think it is LIVE pr which counts in ranking a site .
What matters is actual PR. Public PR (Toolbar or Google Directory) is only accurate when it's updated and for some unkown period of time following the last update. Matt Cutts' Blog: What's an update?