Unless every client is just as free-form and chaotic as Google Wave, each kind of client will have a different community and a different communications style.

Unless every client is just as free-form and chaotic as Google Wave, each kind of client will have a different community and a different communications style. There's not much to get excited about until one of those yet-to-be-invented (and presumably more structured, less free-form) paradigms actually emerges and catches on.