We haven't been invited to try out Google Wave (yet? pretty please Mister Google?), but based on the 80-minute demonstration video, we're jazzed about it. Don't have 80 minutes? These eight 30-60 second clips highlight the best parts of Google Wave.
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First the simple stuff. Google says Wave is what email would be if it were invented today, so it looks a whole lot like Gmail. But all editing and commenting happen on a single copy of a given wave (that is, message or document). You can comment on a wave below it, or inline. Check it out: