I will be honest: unless a poll is completely ridiculous, I mostly feel tempted to answer a poll. That's given that the poll is not nasty, such as "Which of the following people would you like to see tortured?" or "What's your favourite type of malicious gossip?" or something like that. Things like "What's your favourite type of nail polish?" would probably have me cringing AWAY from the poll, or "Do you think Angelina and Brad should stay together?" would send me into groan-mode.
Polls about eBay - particularly polls that offer possible solutions rather than merely outline problems - would attract me.
BNWT, I would answer almost every poll (given the above constraints), and I think I'd enjoy seeing them.