Q&A Sites that earn you money

You can be an online researcher answering questions on the internet on every topic imaginable like money, mechanics, science, investments, market research, homework, cooking etc. If that interest you, check out JustAnswer, they offer small payments for answers to questions. Their website states that you'll earn money for all of your answers that are accepted.

Stage 1 (new) Experts earn 25% of what a customer is offering for an answer and Stage 4 Experts earn up to 50%. Once you have more than $20 in your account, just request payment and they'll Pay Pal the money to you on the fourth business day of the month.

Another one is Askville from Amazon however you have to join Amazon's mturk program in order to make money from it.

ChaCha is also a good site that pays you to answer questions.