[dkarl]

They have "Circles" on Facebook that let you restrict status updates? If so, most users are ignorant of them. The most common Facebook complaint that Google+ has provoked among my friends is the need to keep their status stream safe for work, grandma, etc.

I know that Facebook Messages can be targeted to groups, but they aren't really the same thing. Messages aren't designed for sharing; they're designed for, well, messages.