In the middle of all of this is a new breed of research corporation that relies on you – the survey taker – to determine this information.  For your time?  Many survey companies will pay you to take surveys for money or for other cash alternatives like gift cards or physical prizes and rewards. It depends upon the company as to whether they'll offer money or other offers and special deals.
One example would be that a brand like Coke or Pepsi wants to know more about what kind of people are buying their beverages. They might want to learn more about the age, gender, income, or location of the people who like or dislike their products. They might use this for marketing purposes or to make decisions about their future products. Brands like this spend a lot of time and money investing market research to get your feedback. You just get money for doing them a favor – it’s a total win-win!

I don’t see PaidViewpoint on your list. I like using that site. I signed up for it on June 28, 2016, but I guess I forgot about the site and stopped using it on July 24, 2016 but had a total of $1.91. I started using it again on May 5, 2018, and I’m now up to $27.05 and have a trait score of 10, which is the highest. The surveys are easy and you don’t get disqualified. I mostly earn 10 cents, but once in awhile I earn some good money like 62 cents. It does take awhile to add up, but it’s free money.
MintVine is a cool looking paid survey site that makes it easy to complete a survey, without having to spend too long learning how to do it. One of the things I liked most about MintVine is that they offer a huge amount of ways to get paid: there’s the old favorite PayPal of course, but you can also choose Starbucks cards, Amazon and other gift cards, and even restaurant cards. Your surveys can pay for your next meal, and it’s easy to rack up points here. Some users have reported delays in receiving payments however, but this isn’t a scam and MintVine are working hard to speed up their process and iron our any glitches. If they do, they could be heading into the Survey Cool top ten in 2018.
Rewards are paid out in cash and PayPal, but the catch of having short surveys is reflected in the pay, which can be miniscule per survey. As you need to earn $50 before you can withdraw anything, that’s a lot of low-paying surveys before you’ve made your money! Some people have complained online that once you get close to the withdrawal amount, the surveys dry up. One way around this is to refer a friend as you’ll receive a bonus when they sign up and you’ll hit your target to withdraw your funds. It’s a bit of a downside, but there are hundreds of very happy consumers who love the site, so it’s worth a shot, especially if you get fed up with the boring or repetitive nature of some of the quizzes elsewhere.
If you can't find any information on other sites or forums, there are some things about the website you can check for yourself. The first thing we recommend is to look for a privacy policy. Having one on the site that is easily accessible to users is a clear sign of credibility. It shows that the company is at least making some promises as to how your information will be used. Lacking a privacy policy is a clear red flag and often signifies a scam.
After joining a survey site, you provide some personal and demographic information, which legitimate survey sites will keep private. That information will be used in choosing participants to take surveys on certain goods and services. If you get selected to take part in a survey, you will be notified through mail to take a short survey to see if your profile suits that survey. When you are deemed qualified, you will be requested to take a longer survey.

While surveys vary widely in how they are conducted and used, there are a number of components that are common across nearly all surveys. Many of these common features have been studied in extensive detail by survey methodologists, psychologists, statisticians, and many other fields of research. The general process of survey research is outlined in the figure below.