polleverywhere.com

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Advantages: All polls are free For the first poll, you don't need an account Accounts are free Available from mobile device Available from computer Embedding enabled Cool!

Weaknesses: Can only create 39 possible answers before pay is in order In order to use or make more than one poll, you need an account

This site gets a 9/10 on my rating scale due to it's easy maneuvering and content variety.