This document provides information on social networking and key players in the industry. It includes statistics on social media usage from 2010 that show time spent on social networks is increasing globally. The top social networking markets and sites in India are listed based on unique visitors and time spent per visit. Revenue models for social networks are described such as premium services, advertisements, partnerships, and virtual goods. Porter's five forces model is applied to the industry. Possible success factors include design, target market, activity focus, and engagement. The document concludes with a SWOT analysis of Facebook.