I've never noticed this before but today i was not logged in but browsing the forums as I often do and on almost every thread (well every thread since I noticed) there was an advert directly under the first posts then the posts continued.

I then logged in and this advert had disappeared, was wondering whether it was meant to be like that as I have not noticed this before.

Nick posted someone (can not find it) that he's done this just for extra advertising and that members don't see it. That's all it is.