Mobile advertising to target users with high precision and through multiple funnels like handsets, OS , handset models , OS version , geo location, demographics, genre , content etc . Define your user segment based on these parameters . Like to target an Affulent user who is stock market savy... Run a campaign targeting iPhone 5 and iPads 2 and above on apps like Bloomberg , financial times, WSJ etc . Thus you can create your targeting segment and target them by running a campaign through good ad network or directly with publishers.