Google Wave
Google has been trying to kill email for well over 10 years, they keep srpuiking the death of email and everyone ignores them
Same with Social, they keep trying to take over the successful platforms, with their own, and everyone ignores them.
I've lost count of the number of "chat" platforms they've killed off, and now they are once again hoping their android platform will allww them to make RCS a new messaging standard, but yet again, most people will ignore it, SMS works quite well enough, and you know google won't be sending to to the graveyard any time soon!