A free turn based server for playing various board games: Chess, Go, Twixt, Dvonn, Reversi, Golem word game, GoMoku, Street Soccer and more on your iPhone or iPod touch. Little Golem is free but requires registration, has several kinds of tournaments and in several games there are strongest players in the world and is supported by a friendly community of several thousands players. Try with TestiPhone
Best (and only) place when you can play chess, Go, Hex and other board games via iPhone.