$.02 for your $.02: Helium Knowledge is a message board with a twist: it promises to pay you for your opinions if enough people like what you have to say and give your answers favorable ratings. The catch is that after you either answer a question or enter and answer your own question, you have to spend some time reviewing responses of others.
It's a message board. Sheesh!
If you have time for the scheme, give it a shot. I just don't have the time to spend on it in order to make the pennies it's offering.