Someone spammed about a million forums with a link to several different porn forums, mine being one of them. It actually increased my traffic which was cool. Has this happened to anyone? And why would they do that?
If I had to guess, I would say it is someone who is advertising with you, or an affiliate. Or, as was said before, you are very lucky.
Well I searched the guys user name on my site and its not there. Its not linked to any one thread, just the main page of my site.... I have BLA and Juicy on there but I dont think they would advertise for me...haha I guess I am lucky.
Don't ask why, just accept it good for you isn't it? Anyway I don't know why on earth would somebody do that, I can't see what he could gain by doing something like this...
It might be one of your competitors that is trying to get you banned. Let Google know about what is going on. You might be seeing an increase in your results for a little while and you might be penalized in a few months. The traffic you are seeing are mostly angry webmasters if they start reporting your url you might be in some troubles soon.
But... he says it's a porn forum. It's not like he's got anything to lose, is it? It's not as if he has a site in good standing or anything. Porn sites are outcasts to begin with. Right?
Porn sites are a multi billion dollar industry!!!! I wouldn't exactly consider them an outcast. If he has some seo rankings and traffic from SE he might have a lot to loose if he gets banned.
I never run a forum before, but getting increase of traffic sounds good. Is your links are dofollow? Then, it might effect badly in google's eye.