us poker sites online

US Online Poker?????????????????

Can someone please give me a list of Poker Sites that allow American players. Also which do you recommend? Which have the best signing up bonuses. Reload bonuses and refer a friend bonuses.
Please do not include PokerStars since I already play there. Thanks in advance.

Doyles Room
110% up to $550
25% up to $250
Loose players at lower stakes and one free bounty entry plus new deposit freerolls

http://www.otkpoker.com/visit/doylesroom.php

Carbon Poker
100% up to $600
$25 per friend
Low player number but great for qualifiers and freerolls

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http://www.otkpoker.com/visit/carbonpoker.php

Full Tilt Poker
100% up to $600
Up to $100 per friend
Action 24/7 but tough comp at mid to high stakes

http://www.otkpoker.com/visit/fulltiltpoker.php

Pitbull Poker
100% up to $750
$50 per friend
Low player number but freerolls hourly and no download
Free $10 with no deposit by using OTKPOKER as the bonus code

http://www.otkpoker.com/visit/pitbullpoker.php