We just started, there's no limit on people who can participate, only a limit on rewards we will distribute (also you can continue folding after we run out, it's for a good cause after all).
Tracking will be done using the team stats provided by folding@home, you can check the link in both the OP and first reply.

To avoid me spamming I'll do either collective updates with group colors, or just add your names into the first reply. You're in group blue.