The Official Mister Poll Forum
For me it would be very cool if I could ask general population about something and not just some special audience... If you go to an online forum that talks about headache and ask people if they currently have headache you'll get very different results than you would get from general population.
To get closer to "the truth" it would be nice to be able to include a poll only in "random poll" feature. This way I would get much lower amount of votes, but the votes would better represent average Mister Poll user. Some would still skip the poll if it's not interesting, so it would not be a perfect system.
Not sure if unbiased data is desired feature... it could spoil the fun ;-)
Submitting only to the "Random Poll" feature? It's an interesting thought. I suppose you could get close to it now by getting into the "Miscellaneous" category, since that doesn't attract any specialty interest.

