CNNMoney.com offers an article that offers a brief timeline of social media. From 2002 through today, social media has grown from a site which offered users a "cookie cutter" page format with minimal editablility to sites that users control every aspect of formating. Along with this, popularity has grown to the point where almost everyone and every business has at least one social media site presence. Social media sites offer users the ability to connect with others in a way never before seen. This article touches a little about this as well as provides a brief introduction and history of social media.
Aww, social networking is growing up