With U.S. smartphone penetration hitting 40% and tablet ownership expected to exceed 40 million by the end of 2012, the opportunities for reaching users through mobile apps are substantial. But research also shows app abandon rates are very high. How to best engage users in your mobile apps, drive usage and deliver that audience to advertisers? In this joint MMA/NAA Webinar, mobile industry experts will offer five critical steps for optimizing your usage and revenue on mobile apps.