With Nanobots, Vince and I have started using Google docs to exchange ideas. We're both looking at the game walkthrough, and he marks off which items he's programmed and which he still needs animations for. It's not as timely as instant messaging, although it saves me the trouble of staying up until 3am here/midafternoon Japan time. 
Oh wow, I'd never thought of utilizing Google Docs before; I'm a huge fan of utilizing a wiki for primary design to take advantage of hyperlinking, which I feel is definitely something that one should take advantage of. Google Docs could be a great alternative for someone who can't install a wiki directly!
I too have used instant messengers for primary communication, though. Do any of you guys have IRC channels for your projects? I guess generally speaking adventure game teams are too small to really benefit from IRC but I personally enjoy the fact that IRC is less intrusive than IM - a good long day-spanning IRC discussion also gives you a sense of continuance.
Internet is a bless I say!
That's damn straight! I think everyone should attempt to hook up at least every now and then. I know I've made plenty of good friends over the net and it's always a thrill to meet up. I've noticed something interesting about purely local teams (like university or game school teams), though - they often work well for a short time but essentially have very little durability and often don't last, or even finish. I wonder if one could actually see the distance as a positive thing, sometimes?