I don't think the Quick Reply box adds to spam. For the first week it does, and then people move on. It lessens the load strain on the server, helps load times for users, and just is generally more convenient. And the porn people thing would only work as replies to posts anyway, since you can't do a quick thread. *shrugs* I think it's the most convenient and useful hack on Gamingforce Forums, and that's saying something.