Ipsos i-Say: A reputable, global survey-based market research company that gives its community members a chance to provide opinions in exchange for survey points that earn you money. Earn towards gift cards to spend at your favorite places such as Starbucks, Amazon, Target, and more. Or just trade in for cash through prepaid VISA gift cards or Pay Pal funds! Go here to see if you qualify. (Spots fill up quickly and reset each month, so if you aren’t accepted, try back around the 1st of the next month!)
The concept of data mining and profiting off that data mining isn't anything new. And while some companies engage in some rather disreputable practices to do this, Global Test Market seems to be doing just fine with the whole “consent to disclose” thing. More importantly, in some cases this may help you as some companies will offer to do more specialized product testing once they've identified you as their target demographic.
Surveys are just a small piece of the puzzle. The best part about the surveys is that the qualification questions are typically short, there to confirm you're not breezing through it, and you can still earn points if you don't qualify. You will not answer 30 questions and then get denied, with zero to show for it. As of May 2017, they've paid out $191.5 million. They give out 7,000 free gift cards every single day.
IOCS is a not-for-profit research organization that conducts studies and experiments on shopping-related behavior – things like how we, as consumers, evaluate products, how we make the buying decisions, etc. Although the focus is mostly on shopping related behavior, some of their experiments and studies include broader areas of marketing, psychology, and economics.