Future Pagerank/Predicted Pagerank?

There are lots of links available for that, but I didn't find anyone much useful.
http://www.iwebtool.com/pagerank_prediction
http://www.rustybrick.com/pagerank-prediction.php
http://www.pagerankprediction.com/
http://www.selfseo.com/google_pagerank_prediction_tool.php
http://www.cumbrowski.com/CarstenC/FutureGooglePageRankPrediction.asp
http://www.web-hosting-top.com/web-hosting/tools.pagerank-prediction

Try it out... may it will be of some use for you.

 

From all the iWebtool scripts I get predicted pr4 , but from the rest pr0

 

Check all my domain in iwebtools including few PR4 sites and all i get is 'Insufficient backlinks*'... Sigh..