I have had a 25 percent increase to my Rank Checker, site, but absolutely nothing on PR, except claims that it will be soon, only Google knows
Don't be surprised that when the next update comes, the changes will be much more severe than normal because of the time that had elapsed.
I myself don't do that stuff and PR for me doesn't really matter. All I care about is whether my site's okay with google and they aren't penalising me somehow. even if i went to just a 1 I'd be happy cause then id know. But we are ranking decently well so for the meantime I don't let it bother me, that much.
it's so weird..I already build lots of back link to my blog but my blog's PR doesnt increase..it's still PR 2....I'm so sad...