The merger of e-mail, instant messaging, and collaborative editing is overdue. Aside from the inertia of technology, there’s no reason we should we need different applications - an e-mail client (or site), an instant messenger, and a collaborative editor - for variations on the theme of textual communication. I give Google a lot of credit for kicking off this experiment.

Hands-on with Wave: Weird and quite wonderful

CNET hands on.