Originally Posted by celegorm
Those 21 spammers were all within a month, and after we decided to keep count.
When was this? Time has really changed!
I built a MyBB board a few months ago just to see how many spammers it would attract. I gave it one link from my main site. After three months, I was getting 1K+ spammer registrations per week; most don't even bother with spam posts any more. Instead they use birthday + link spam with their profiles.
Most of the spam I got were trying to sell drugs. I don't remember seeing any porn.
I also run anonymous imageboards (think 2ch). No registration is required. But they don't get nearly as many spam posts as any of the popular forum software.