Tried on desktop pc at work and laptop at home. Ads are there filling the screen. Doesn't make any difference using chrome or IE, logged in or out, same thing.
If I were a newbie looking for a forum to join I would be clicking away looking elsewhere.
Not good and needs sorting quickly as others have said.
Btw using my mobile (android) it's fine no ads at all but a pain in the a*** typing a longish post like this.