PA - no one uses google wave. it was a colossal flop. if it were a success, Google Buzz would not exist.
Google wave is a good free replacement for telemeeting software. People who want to use it for social purposes are out of luck.
There's a storm brewing, as facebook like circumvents googles link-tracking, and facebook email is on the horizon. I wish people would switch to one of the open source alternatives. And by people, I mean my friends only, so the servers don't get overwhelmed.