How do you know if someone isn't on Facebook? They'll tell you ;) Facebook is still attractive despite the negatives, and I haven't yet seen a good wholesale

How do you know if someone isn't on Facebook? They'll tell you ;) Facebook is still attractive despite the negatives, and I haven't yet seen a good wholesale replacement for it. Personally I'd like a better feed manager built into the browser itself. And a very simple way to publish too. Access control is the difficult problem.