This document discusses social media marketing for mobile, social, and web apps. It outlines that social media marketing is about generating exposure, opportunities, and sales through online community engagement. It provides tips for an effective social media marketing campaign, including identifying key social sites to target for maximum return on investment. It also discusses how to measure social media return on investment through metrics like sales revenue, reach, and customer spending. Overall, the document promotes social media integration as a creative and cost-effective way to build relationships with customers.