This document discusses the evolution of social media and the internet, specifically focusing on Web 2.0 platforms. It provides statistics and explanations on the popularity and uses of Facebook, Twitter, YouTube, photo sharing sites, check-ins, blogging, and social media etiquette. Key points include that Facebook has over 900 million active users who generate over 30 billion pieces of content each month, and Twitter sees 100 million active users tweeting 200 million times per day. Social media allows for fully interactive sharing of news, photos, videos and connections with others.