I don't think that people provide input so that the sites they like survive. I don't think people vote on Digg because they realize that if no one votes, Digg d

I don't think that people provide input so that the sites they like survive. I don't think people vote on Digg because they realize that if no one votes, Digg dies. I think people just like to share their opinions and express themselves. If a restaurant pisses you off, then of course you want to tell other people to avoid that restaurant, not just to help them, but also to spite that restaurant.