PollMyTweets is a neat little service that allows you to send out a request to your followers to participate in a quick poll. Starting is easy.
Simply log into the site via Twitter.
Tweet using #poll: #poll Do you Like IceCream?
They create a link for followers to vote on.
From there you can see results as people respond. You can use the service as often as you need. I am not sure of any embedded ads or promoted items, but I am sure they will come up with something to make some funds.