I technically have an account, but I basically never log it in. Anyone who posts updates on Facebook is missing me. But given that they probably miss a large proportion of people who actually *do* follow them, it's not that much different.
My biggest beef with most forms of social networking, definitely including Facebook, is that it's really REALLY hard to find back any serious discussion point. With blogs, linking to people's posts is normal and expected. With mailing lists, it's usually easy to link to a particular post in an archive (this does depend on the exact software used, but Mailman + Pipermail makes it easy) - PEPs often cite python-dev/ideas posts, eg PEP 461. Bug trackers invariably make it easy to link to specific bugs, and often to specific comments on those bugs. But Facebook is designed for the ephemeral. Have you ever tried to hunt something down that was posted over a year ago? To share it, with a link to a specific comment? It may be possible (though I'm not sure it even is), but it's definitely not easy. And that means words are less valuable and less valued than they are in a place where people stand by what they say to a greater extent.
The man who gets angry at the right things and with the right people, and in the right way and at the right time and for the right length of time, is commended. - Aristotle (but not the Aristotle you're thinking of)
The important thing is not to stop questioning. Curiosity has its own reason for existing. - Albert Einstein
Mainly to keep a lid on the world's cat population. - Anon
I pressed the Ctrl key, but I'm still not in control!