privacy issues aside...Buzz is frickin awesomemso far. Even considering how much work and improvement it needs. (and it DOES need work, it's a very "green" product, so to speak)
It's what Wave should have been. I'm enjoying it immensely, problems and all.
I do think though, that this should have been attached to Google Reader, and not GMail. but I understand why they did the latter.
