Do you think you're a specialist in a field or do you think to have enough knowledge and wisdom to offer fine solutions to other people's inquiries? Do exist any sites that compensate you for giving out your knowledge and expertise? The solution to the last inquiry is affirmative as there are certainly websites that pay you for replying questions other people pose.
The paid to answer sites are clones of the answer sites: historically the initial answer site is answer.com and the initial paid to answer site was Google answers in which people could pose questions and who answered them was paid but at the moment it's not anymore active since the end of 2006, it has been overtaken by the well-known yahoo answers along with the answerbag.com and the linkedin answers which is restricted to business related questions.
Yahoo answers is the most famous answer site in which people are not paid but receive points for replying inquiries other persons ask: such points are valueless from an economical viewpoint and using affiliate links in the answers could lead to restrictions, so if you have more points than others you can just feel a bit wiser than the others and nothing else. Answerbag.com is organized in a similar manner and also here affiliate links can lead to answers removed by administrators.
You see that there are two varieties of answer websites: the first one in which everybody reply on any sort of inquiries while in the other one only specialists reply to serious questions. Instead the paid to answer sites are of the kind in which specialists are paid to answer questions and comes from Google solutions as are organized in a very similar way. To find them just browse Google by "paid to answer questions" and you will find some nice results, anyway experts in such sites must have credentials and give proofs of their knowledge.
What happens if you don't have a certification or you do not have an expertise in the field you are applying for? Then you cannot qualify for such websites because they want to give a top quality service to their clients and so they necessitate to have qualified people working for them.
If you meet their requirements then you may have a nice time with them, definitely it will be a source of extra profits and if you are fortunate than you can make a living from it. But if you do not have such credentials then you should choose for websites in which aren't necessary such requirements, you can locate them searching Google by "paid to answer questions adsense".
You must accept the fact that such sites don't compensate you a exact amount for every your answer chosen as best by who asked, instead you can create an adsense account for free with Google and they allow you to use it for half of the visualizations of your answers chosen as best. They aren't surely a quick get rich scheme and you need to work a lot before making a living of it: just having best answers in your account is not sufficient because if the pages in which your best solutions are shown are not visited then you won't make a penny so they must rank good in search engines, to attain this you must have high quality links to them that you can obtain through article marketing and other methods.