I would think its difficult to get accurate numbers. The poll is in GD, so the only people who see it will be people who read GD. I don't know how that would affect numbers. On the one hand, you might have some older types who only want to read the scientific stuff, but on the other hand you have a lot of members who only come here for help with homework and tend to be very young. Also, amoung those who see the poll, younger people might be more inclined to vote.