lol, loads of people still use email in like business and especially at uni, but the idea is to kinda combine instant message and email, so that if ur both at the pc talkin its kinda quicker than email but if one goes away for a while its more like normal email, but like you have like amassive tree of a convo using a wave by adding like anyone at anytime but you can send them other private messages, the messages that are instant can show the other person typing which saves time but u can also keep it private. This really could replace facebook and other email services, its also been made so that other developers can add apps to it, so it kinda like facebook,msn and forums rolled into one program. TBH watch the video it explains a lot although the people are a bit lame :P