They include sites that seem to be their competitors because they earn referral fees when you buy memberships. A couple mentioned in scam forums even try to dupe you into buying the same list at other membership sites they own under different names. Naturally, these sites also have an incentive to exaggerate how much you'll earn from online paid surveys.
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.
The other type of paid surveys CashCrate features are targeted surveys, which are available only to you and people who meet your demographic profile. It's very important that you fill out your profile on CashCrate right when you sign-up. Not only will you earn $.50 instantly, you'll also be eligible to receive these special surveys. So why are they so great? First, they'll often pay more than Daily Surveys. That means when you see one available, you should jump on it right away.
If you are looking for highest paying surveys, then you must join Harris Poll Online survey panel. Harris Poll Online is a well known market research company and has been in business for more than 50 years. Once you join Harris Poll Online you will have opportunity to participate in paid online surveys, focus group studies and paid product testing opportunities.