Poll Everywhere

Poll Everywhere is the easiest way to gater live reponses in any venue: conferences, presentations, classrooms, radio, tv, and etc.  Most businessess uses poll everywhere for marketing research.  A lot of businesses uses poll everywhere such as: Google, McDonalds, MIT, Notre Dame and even different churches.  Poll everywhere is a good resource is you want to find out what the world thinks about something.
I did enjoyed using this website.

http://polleverywhere.com/