Yeah that's right. but that's a really common thing in forums.
Spam topics are really easy to reply. I mean like your long thread, that really takes some time to read, think about and reply. You can't do that while a short break of work or stuff like that, you know.
But it's not bad that the spam section is popular (actually it is not that popular as you think it easy, I mean there's like one game currently running with the word assosiation but a bunch of threads in the metal related sections...)
So nothing to worry about!