We received our very first pseudo-abusive user contribution this afternoon on oKs, only 3 short days after our debut. The interesting thing is that I’m not actually sure if I should even consider this an abusive use of the site. It’s not what I had in mind when I said "news and links directory," certainly, but it’s also not a totally useless link either.
I suppose the fact that it’s an advertisement constitutes abuse, but how is that different from someone plugging a gig or promoting a book? It’s not like the user is a bot and he’s just spamming us with links. (I know for a fact that he’s not a bot because he emailed me afterwards asking me to create a "Travel" category.)
I’m still waiting for our first hardcore porn-site contribution, and am actually a bit surprised that the b-grade ecommerce sites got to us first.