CHeck it out!
I, personnaly, have always been interested in small robots doing something together.
I just find the idea so awsome! :P
I agree, the concept is very interesting!
Not very suitable for hobbies, unfortunatly - you know; Building 5+ of one robot makes expences increase, and debugging / re-doing stuff so much harder.
of course one could play around with one form of communication, but individual robots..!