Interesting idea. It's something fairly cheap to give people with whatever kind of points, and probably also makes sense in terms of habitual users being the ones most likely to have points and ignore ads.
Who's talking about it here? Now compare the top posts at the same time as this and perhaps you can understand what I'm talking about?
And yet, "Do you watch TV" got like, 100+ responses in mere hours ...
I hope this post becomes popular because this is an idea worth at least discussing, if not pursuing.
Bet not too many people will pay attention to it though ...