User blog comment:Lancer1289/Wikia's New Skin, the countdown begins/@comment-1074875-20100928213440/@comment-2088100-20100928225841

That's actually not something we control. Wikia removes ads for registered users, not us (and it would be against the ToU for us to do so on pages where they do display ads).

Right now the new skin has the same behavior as Monaco: No ads for any pages other than the main page (except for huge spotlights for other wikis, I think). Who knows if it'll stay like that though.