Have you heard about getting paid to answer questions? It may sound wierd, but there are people on web who genuinely pay for answering their questions. Questions may be something related to health, web service, pc, etc, or even homework! For eg. Suppose a person has some problem in his pc and he cannot find help anywhere on web, in this case only a real person having this knowledge can help him. Also a student for example has some important homework or an assignment, further suppose he wants a solution for a problem (maths, physics etc), its rarely possible that you can find a solution directly on web unless it is a common problem. In this case there are some websites which allow you to post and answer questions. A user in need of answer may post his/her question for some price set. He inturn will recieve number of answers from other users. He can choose the appropriate answer which satisfies him. Some sites may pay you directly to post and answer questions (price not set by users).

Here are some site listed below who serve this purpose :

Duno.com
Pays 10 cents per post

Guruza.com
User sets price for his questions

Iwantyouranswers.com
Get paid to answers questions from different categories

Helium.com
Get paid for writing your articles

Justanswer.com
Answer according to your own rates

Expertbee.com
Price for answers set by users

Knowbrainers.com
Get paid to share your knowledge

Studentquestions.com
Get paid to help solve homework

Smallbizadvice
For business expert advisors

Problima.com
Users submit questions within categories and accept answers from Solution Providers.