It's over.
Yesterday I deactivated my Facebook account. The signal-to-noise ratio there (or, more accurately, the enjoyment-to-frustration ratio) just wasn't high enough to justify maintaining an account.
I still have @mckay (identi.ca), @mckaymarston (twitter), and mckay.marston (google+). And fark, reddit, and instagram accounts.
Plenty of places to waste time.