As of 4/16/11, it appears the only site accepting American players is below. When things change, I will update the page.
This is the pinnacle of free poker. You couldn't make a deposit even if you wanted to. You can however cash out real money. Each player begins with $25 FreeD (currency of No Pay Poker). There are free tournaments if you run out of FreeD's as well as buyin tournaments and cash tables. You can earn even more FreeD's with special offers. Cash in your FreeD's for real money at the rate of 10 cents for every $1 FreeD ($30 minimum). One of our players has received over $300 actual cash! Click here to sign up for NO PAY POKER today!

Increase your winnings with this Double Or Nothing Sit & Go Strategy Guide! It's the only one of its kind for this type of tournament.
Read an article - "Effective Freeroll Poker Play" - by the webmaster. This will assist you in increasing your bankroll.