Poll everywhere

I found this entry at Teach42

Poll Everywhere - Simple Text Message Voting

Poll Everywhere is the World's first all-software audience response system. Unlike other voting solutions, you don’t have to buy expensive proprietary hardware or “call for special pricing,” you just sign up and immediately start creating text message polls. Your first 100 votes are free and if you decide that you love Poll Everywhere, you can buy more votes for about 16 to 12 cents per vote.

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