All the friends I actually talk to were autosubscribed :OD

While it was a huge loss for privacy when they actually did it, (and seemed more like not thinking than anything else), once I turned on settings to block people, it was easy, everyone was there, and already using it.

I use it fairly regularly, but mainly as another way of communicating with my friends over our Google Reader shares. It's a good interface, supports replies natively, and doesn't constantly tell me "too many buzzes, try again later".

I use it to keep up with friends on platforms I don't have an account on (like twitter) or to share news clippings and I've taught my Mom to use it instead of sending me FWDFWDFWD mails.