There is a much nicer way to do a poll in a comment. See here.
Also, if you are going to conduct a poll via upvote, you may want to add a karma dump option as well, where people can downvote to counterbalance their upvotes. Some people might not want to provide upvotes for reasons other than quality control.
Please don't use that in the latest open thread though, since it makes it impossible to subscribe to the RSS feed of the thread.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.