Most of the applications are so clustered with ads, so that everbody is probably ignoring them. I do however sometimes find the facebook ads (the main site) hi

Most of the applications are so clustered with ads, so that everbody is probably ignoring them. I do however sometimes find the facebook ads (the main site) highligy targeted (I even clicked twice on those). I bet they charge more than a few cents per 1000 impressions.