Twitter has said it's rolling out a new polling capability to everyone which will allow anyone to create a poll, but currently, it's restricted to two choices, and the poll will remain live for 24-hours. Apparently, user votes will remain anonymous.
This sounds an interesting start, and adds some immediate value to twitter. I'm just waiting for all the polls to invade the streams.
Now, you’ll be able to create your own two-choice poll right from the compose box and it will remain live for 24 hours. You can vote on any poll, and how you voted is not shared publicly. Twitter 24-Hour, Anonymous Polls To Roll Out Globally [blog.twitter.com]