>>16
I have a meta-board that shows me all the threads site-wide in the order that they were created (or optionally, bumped). Despite that I usually only check it about once a day. By the time I generally find it, the CP has been sitting there for several hours and I'm sure all the pedos have already downloaded it.

In reality I don't think there's one solid effective method. I might end up implementing what >>15 said, some method of blocking proxies/Tor (to be fair to other users it won't be an outright ban from the site, they just won't be able to post images), an md5 blacklist and anything else I can think of.

Based on what I've learned in my particular case the posters aren't actually trolling, they're just a bunch of lolilovers looking for a discrete place to drop off CP. The fact they they're persistent and that my site isn't actually dead honestly makes me rage.

Personally I couldn't care less that they fap to exploited little girls. I tend to regard pedos as unlucky bastards who happen to have a fetish they can't legally pursue. That doesn't make me sympathetic toward them posting pictures of 3 year olds getting penetrated by adult cocks on my site.

tl;dr; RAGE.