Generally many companies want to get user opinion about their products, for that purpose they sometimes give money for answering their surveys.
I have joined several online survey sites who claim to give payout for their surveys some of them are
Opinion beureau
Panel station
Valued option
All these websites have one thing in common, They sometimes ask your very personal info like your family members, and sometimes they even ask about your health.
I will suggest you to never give your in depth and very much personal information to these companies.In one of the survey they asked me about my health and also if I am suffering from any disease.
In one of the surveys they asked me about my family members and their occupation, they also asked me which insurance policies my family members use.
I immediately stopped using these survey websites.
These survey componies may give you payouts but they sell these information to other companies which want to sell you related products based on your information.also they show you advertisement related to your information.
Secondly these survey websites initially pay money for thier surveys but after somtimes they dont send you surveys so that you will never reach minimum payout limit and they will never pay you.I am seeing message
unfortunately we do not have new surveys for you in my opinion bureau account from almost four months.
Hence please dont trust online survey websites.