Killergran on 20 November 2009
Wave is email, but with a twist. Instead of individual messages being sent around, each wave simply sits on a server and gets updated in near real-time anyone edits it. Meaning it's a chatroom as well as an email, among other things.
It also supports extensions, so you can do tons of stuff with it... or will, once the extensions are made. Right now it's just... dead. Even my email is livelier (yeay for spam!)
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