Unfortunately we found this project only last week, just before the deadline on July 6th: Instant People. Just in time to make our own contribution. A little too late to help find more contributors... There are 175 Instant People and their self-portraits can be viewed in an exhibition during Documenta 13, from July 11th. Enjoy!
You'll find communities and competitions here. Both are motiviting and inspiring. In some way participants form communities too ;)