Vindale Research, also known as SayForExample Inc, Paid Samples and Survey 4 Profit is not a research company at all. I doubt any of the forms you will fill in actually go anywhere but the trash file on vindale's server!
They are quite simply the same as completing "yes and no" boxes one receives for services on advertising sites. The only difference is, they offer you money to buy services or apply for credit cards.
The small print ensures that they can disallow 99% of payments. For example, you will only receive your payment if a credit card approves your card. If they were a genuine research company, why would one's acceptance be a requirement if the application had been made according to the instruction given?
It's a scam, plain and simple and anyone who applies to complete the fake questionnaires should be very aware that it is purely about selling you services. Your answers don't mean a thing and are there to keep up the facade!