"Swarming, for the purposes of protesting, can be thought of as the technique of quickly massing a large number of individuals from all directions onto a single position in order to attain a specific goal. There are roughly four different phases in a sucessful swarm: locate the target, converge, attack, disperse. For these four phases to work correctly they must be synchronized between a diversity of seemingly disconnected individuals. Therefore, there must be a layer of instantaneous communication between these individuals. This level of communication is the most difficult aspect of swarming -- and a prerequsite that has made swarming up until now much harder to accomplish. There are now several wireless communication options available, the most prevalent being the cell phone..."
Swarming and the Future of Protesting [via Flashmob.com]