http://www.iothello.net/index.php

maybe all of u know this place to play but since im new i just discovered. i found it very interesting.

also try these for Othello/Reversi

www.PlayOk.com

www.YourTurnMyTurn.com

www.ItsYourTurn.com

www.Vying.org

www.Pocket-Monkey.com

www.BrainKing.com

www.GoldToken.com

www.AllMixedUp.com

www.FlyOrDie.com

www.buho21.com

www.International-Othello.com

www.Yucata.de

Yucata.de allows cheating, though.