This poll you can. I set it that way.

There seems to be a problem with multiple submissions, though. If you've already posted one, it seems to track your IP and if you answer again, even anonymously and logged out, and it only changes your old answer to your new one instead of adding the new one in addition to the old one. I want people to be able to post as many as they want, but I'm not sure how to make it do that...