It bocks ads from cpalead.com cpalock.com leadbolt.net cupexmedia.com. I can't use banners on this for obvious reasons. (where would I put them without it messing up the page?) I was thinking either pop ups/unders or the in text ads. Of course it is used on 100's of domains so the advertiser I'm going to use must not force you to add every domain it's going to be used on to your account to get credit.