10 rules for virtual teams
A fairly lightweight, but fast read - MIT Sloan's article outlines 10 rules for creating successful virtual teams.
I've worked in virtual teams across several continents, and I think these rules are pretty solid - no guarantee that you'll create or work in a jelled team, but worth reviewing, regardless.
I particularly like no.6:
"6. Create an online site where a team can collaborate, exchange ideas and inspire one another. Strong virtual teams often have a shared online workspace that all members can access 24 hours a day. This space can include the ability to see one another's work, a shared piece of work—like a new product design, or a creative proposal..."
I think a shared ThinkFold outline fits that description rather neatly - sharing a design document by taking charge of different nodes and then collaborating together in realtime during the timezone windows that bring the team online at the same time.