Of course they're soliciting
But at this point I'm willing to try anything
to get rid of these things.
I've moderated 4-5 seperate forums over the past few years.
There's an easy way to tell if they're specificially here to spam.
They tend to have e-mails addresses like freeservicemail[DOT]info
etc ( I just flat out block those types of e-mail addresses from signing up in the first place) their profile will also contain a link to what they are talking about anywhere they can get it.
They also tend to start their posts off with something silly or name the topic something like "INTERESTING". I usually get 1-2 per week across the forums. So don't worry, I know how to spot em. Multimedia Comm. (Fancy phrase for marketing ) was also my major in college. I don't mind if people are trying to sell me something, as long as they don't start spamming and being annoying and its not an obvious rip off (like the 50 million hoodia knock off ads)
Anyway, ending rant now I hate having to delete the little buggers every other day. I couldn't handle allowing guest posts, makes it harder to track where they're coming from aside from the IP they posted with.