Interesting... I'll keep an eye out for anything strange or unusual while I play. Maybe there's some good story material in there.
As to the advertising bit, I don't think this really qualifies. It's more of an announcement of an opportunity. It's not like you're telling people to visit this website or buy this product. If the mods are okay with it then I believe you're fine, don't worry. In fact, thank you for pointing this out; I never would have seen it otherwise.