The one exception is spambots. It's the ugliest side of blogging and the Internet overall. And now that I think about it, I guess that's not an exception since they aren't real people.
That said, lately the spam has been hitting ELEVEN pretty hard, to the tune of fifty to sixty spam comments a day. So much to my shagrin, I've had to add word-verification to comments. Sorry folks, I'm just tired of deleting insane amount of spam bs.