Useful tool if you are trading PR

[Pervy]

I found this the other day, its pretty useful for checking Google PR for your sites or anyone you are planning to trade PR with

http://www.freelance-help.com/google-ranking-report/page-rank.php?url=http%3A%2F%2Fwww.greenguysboard.com%2Fboard%2Findex.php

Pervy