Neat, I've signed up for RPOL and sent a request to join, but I've started a thread here for now
http://forums.sjgames.com/showthread...10#post2218410 starts 1 on 1 and each poster plays 1 char but if a 3rd player (or more) wants to join they can.
So there's some warning, I think I'll play it like Super Smash Brothers where the challenger appears on a floating cloud with a 3 second countdown, so there is some chance to respond. I would say we can make perception checks each second to notice them there, otherwise they get a surprise attack. "One Foe" (+1 to defense against one guy, penalty to perceives others) is an option I'll begin with.
Fantasy Grounds looks nice but I'd only use free virtual tabletop right now if I were to do live schedule gaming.