Well , i realy belive that the one who knows about the PR is google himself . I am new to this business so i was just wondering about how much PR i will earn at the next update .
 
I was searching google for some 'prediction tools' and there was  lots of them .
I will post here just two :
 
http://www.iwebtool.com/pagerank_prediction  where you can see a PR predicted 3,7 (4) for 
www.adultwebcamstars.com
The second one 
http://www.rustybrick.com/pagerank-prediction.php for the same site predicted a 0PR .
 
PS : excuse my english - its not my native language .