www.nopaypoker.com

You play with play$ and you can xchance them, for real money
rate:
$1 FreeD = $0.010 USD

When signing in you receive 10 dollars playmoney.
over 50000 ppl are playing freerolls and tourneys on there.

when you dont mind loud/shouting adds and up to 10 player tables this site may be fun to be on.. and when you play well you might win $$.

Dont know tho if this site is bot-proof and I'm not sure about the cashout procedures..

(just went there to have a quick look, I prefer PokerStars)