Poll Everywhere

Poll Everywhere is a really cool way of getting your class to interact. It is a tool that teachers can use in the classroom to have students respond to polls, or text or twitter in their questions. The teacher can set up a free account for up to 30 people, after 30 there is a fee depending on how many people you have involved in your poll.
Teachers are able to get instant feedback from their students by just having them send in a text message. It keeps everyone involved and is a fun up to date way of collecting information.

Poll Everywhere can be found at: http://www.polleverywhere.com/