The document discusses social networking and how it can be used for business purposes. It provides examples of popular social networking sites like MySpace, YouTube, del.icio.us, Wikipedia, eBay, SecondLife, and World of Warcraft. It then explains that social networking sites have become big businesses and offers tips for how businesses can take advantage of these sites by knowing their target market, getting involved in relevant groups, linking social profiles to their website, and continuing to find new marketing avenues using social networking. It also mentions that Microsoft chairman Bill Gates supports using blogs for business communication and updates.