This game is an expensive coaster

[Suicide Junkie]

Question for Kagetora:
How fast do you finish an average turn?
How long does it take to transmit a turn file to your friends?
Is Tactical combat important to you, or sequential play?

If you want tactical, sequential play,and a fast turn turn around time, I would suggest ICQ. Play your turn, and send it instantly, while giving the next player a poke to hurry up .

If you are OK with using simultaneous to speed up the game, the use the Play-by-Web service.

Unless your turns are really short, integrated TCP/IP support will not speed up your game significantly over the other options out there.