Come Together, Right Now, Over Tweet

With tens of millions of active, loyal users and an unprecedented ability to differentiate users based on their interests and affiliations, social networking sites such as Facebook, Twitter, and MySpace offer a rich opportunity for events to increase their audience, focus their offerings, and extend the reach of their events beyond the convention hall. Social networks represent five of the top 10 Web sites in the world; the rest are search engines pointed largely at the content on