There certainly is a lot of commentary regarding the usefulness of social media marketing, as well as the numbers of people that are engaging in the conversation. According to recent studies conducted by PostRank, we have been able to illustrate what is happening in the Internet’s social community — how people are communicating, what is changing, and where people are doing the talking.
TED Talks: While news from Iran streams to the world, Clay Shirky shows how Facebook, Twitter and TXTs help citizens in repressive regimes to report on real news, bypassing censors (however briefly). The end of top-down control of news is changing the nature of politics.