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.
About that money: Survey companies typically don’t pay you for each and every survey—you have to meet a payout amount to earn your reward. Page says it took her months to reach the $30 payout on one survey site—time she could have easily spent on more lucrative side hustles. This presents a problem if you need money fast or if you decide to change course and try something else—you might end up answering tons of questions and never actually see that money.
“I participated in an in-home product trial study. A coffee machine company sent me one of the coffee makers along with about 200 coffee pods. I received $7 for completing 3 short surveys. Plus, after the study, the company said I could keep the coffee maker. So, I got like 4 mos of coffee for everyone in my household, a free coffee maker and $7!” - David W.