Someone was spreading a script to let people automatically watch FA's whole userbase, a few people were doing it earlier. That's now been declared an abuse of the site's resources, so the accounts have been suspended and made to unwatch everyone. So everyone has a few unwatches today.

Huh. Weird. The only watchbot that watched me was TheNSA. I check all of my watchers for that sort of thing.
Eh. Maybe I just didn't check well enough.

Oh, and thanks.