I discovered this one by clicking on one of the small Adsense adverts that appear at the foot of every page on the forum...
Helium Knowledge (
www.heliumknowledge.com) is a website that will pay you for asking and answering questions. Every time someone reads your answer, you get paid a small amount, which presumably comes out of the site's AdSense advertising income.
Subjects cover anything from gardening tips and recipes to favorite restaurants and investment advice. They show you the highest paying categories (typically subjects such as insurance and real estate) to help you decide which questions to answer. Once you've placed an answer, your answer is rated against others - the better the answer, the higher up the page your answer will be and the greater the chance of it being read. A lot of the answers are very short, so it shouldn't be too difficult to get rated highly for a comprehensive response. You're never going to get rich from a site like this, but with a bit of work you can earn a few dollars a day, and this should increase steadily as you add more questions and answers.
Nick
