Twestival, or Twitter Festival, is a unique initiative that attempts to unite digital life with that of the real. On this day, thousands of individuals from online Twitter communities unite offline to raise money and awareness for a choice cause.

Essentially, Twestival works by using the platform of pre-existing social media — primarily through Twitter but also via Facebook — to raise awareness for social causes. Twestival’s aim, according to the event’s organizers, is to harness the power of social media for social good.

 In September 2008, the groundwork for Twestival was established.

http://www.twestival.com/