The European mobile market is large and growing, with 139 million smartphones shipped in Q1 and the adult market worth $4.9 billion by 2015. There are 500 million European citizens and the adult advertising market is worth £61 million. The market is expected to continue exponential growth for the next five years. Publishers include major sites like Pornhub and YouPorn as well as many niche sites. Advertisers target categories like dating, cams, and niche interests. Success requires identifying strategic objectives, assessing performance, segmenting customers, setting incentives, and measuring results on an ongoing basis.