We just visited Poll Everywhere, http://polleverywhere.com It is a poll site that public users can set up a poll and it does the rest. People then use their cell phones to send their votes to it and it updates it right away. Using a cellphone can be a a valuable asset to a classroom. It is a power piece of technology that should be used in a classroom environment.

Though some people don't have a texting plan, so they are charged for every message sent and recieved or some students don't have a cellphone.