I just stumbled on a really obnoxious ad on FT for BoConcepts. The base ad was on the right-hand sidebar and I tripped over it in Omni-PR although it may show up elsewhere also. When I hovered my mouse over it (which was accidental, because I happened to have my mouse on that side while I scrolled reading a thread), it grayed out the entire FT window and displayed a popover style ad in the middle.