Dig these numbers. More importantly, dig the change between the two sets of data. eMarketer September 2012 Mobile Ad Revenue Projections
Two, that Pandora is not for real. Do any other Internet radio players show up on eMarketer's list? Have they ever? Where's Pandora-crusher Spotify? Not there because, at day's end, it doesn't have a business. At least not one built out to the scale that Pandora's is. Without scale and a sales infrastructure -- both could take years to build -- it's difficult, if not impossible, to compete. Follow @rocco_thestreet -- Written by Rocco Pendola in Santa Monica, Calif.