Mike suggested that I add a way to make comments on poll, which I didn't think would be very easy, but I figured out a quick and dirty way to do it. I simply reactivated a previously closed post in Greymatter, changed the title and body of the post, and added a link underneath the poll. Unfortunately, it won't display the number of comments in the link on the main page, but that's no biggie. I'm still not sure if I'll delete all previous comments when I start a new poll question, or if I'll just keep them indefinitely--it's probably not likely that it'll get a lot of comments anyway.