DeadlyYellow said:
Of the options, I've only heard of Gmail.
What is Wave or Deja News?
Proving Google's
true mistake: a lack of advertising. Google wave sounded awesome when I first heard about it forever ago (not that I have anyone to use it with, but it still sounded cool), and then when the beta rolled around, no one knew about it (I certainly didn't), then when it hit full release, no one knew about it (I still didn't), and finally everyone found out about it when news sites started covering it's shutdown.
And I don't even know what Deja News was.
Also, since you're asking: Google Wave was kinda a mixture of forums and email. You could send a wave to someone, then you and he could both edit it or add to it in real time and see each-others changes. there were a few "apps" too that allowed more functionality.