There are free tournaments (called freerolls) at Spin Palace Poker and the other poker rooms in the Prima Poker network where you can win real money.
Reviews for poker rooms can be found here: http://www.ranked-online-casinos.com/po ... views.html
Royal Vegas Poker had a $10 free chip, but that offer has expired. I am not aware of any current freebies other than freeroll tournaments.
The only Party Poker offers I am aware of are a few bonus codes:
25BUCKS4U gets a $25 bonus with your first real money deposit.
100SMACKS gets a 20% bonus of up to $100 free with your first real money deposit.
I hope this info helps.