First, thank you for providing this extensive list. I wanted to offer a quick follow up. After reading your post I decided to give Survey Junkie a try and I’ve already closed the account. Yes, I can tell it’s well organized and it is definitely a user-friendly platform. The problems I experienced were first that not one of the surveys they emailed me about were available. I did, however, complete several surveys from the site itself and I found them to be lengthy – in itself, not a problem, but 3 out of 5 told me I didn’t qualify after I’d already invested 10 – 12 minutes filling out the forms. They got more than enough information from me to be useful which is an old and highly unethical trick in market research – which happens to be my background. All in all, it was a LOT of wasted time.

The cost of living has continued to rise, while the average salary is still somewhat stagnant when compared to a decade ago, and this is why so many Americans have started to look for ways to earn money at home without having to invest too much time or effort. Family and friends come first, but with paid online surveys, you will not have to cut out any portion of your routine to earn extra money online, as you can instead go through the processes in your sparest of spare time. 
OpinionWorld is an online survey panel maintained and operated by Survey Sampling International, LLC ("SSI"). SSI is a premier global provider of opinions and links companies with consumer views. Over 3,000 companies worldwide use SSI to gain insights to grow their business. SSI has 40 years of experience and 32,000,000 surveys are completed annually. SSI has several survey panels including Your Voice in India.
While product testing is offered, you’ll only get sent items if you qualify, and then it will only be a couple over the space of several months, so think of this as a bonus, rather than a regular part of your work. Some users get frustrated at the length of time they have to wait for vouchers to arrive after they order them – especially when somewhere like Opinion Outpost will pay out straight away. However it is unfortunately quite standard to have to wait weeks for payment from survey sites. Surveys range in duration from about 15 to 30 minutes and there are mini polls on the website which can help you tot up small amounts of extra points. Points do sometimes take days or even weeks to appear in Toluna accounts, which is worth noting.
With one of the lowest cash limits in the industry, you can get $10 out when you have accrued just 100 points. If you want to take your earnings in the form of a giftcard, the threshold is even lower, as you just need 50 points, equivalent to $5. Many other survey sites will only pay out after you earn much more, like $50. As with all good survey sites, Opinion Outpost allows you to take your earnings away in vouchers for big firms like Amazon or iTunes, or if you prefer money, to do so through Paypal. As well as paying out early Opinion Outpost also pays extremely quickly, often the same day or in some cases, immediately.
Velasquez says our information could be used for questionable studies or sold to health insurers, for example. Or it could be stolen, which is a risk with any website that stores personal data. Most of the information we gave away seemed harmless — our shopping habits and travel plans, for example. But information like your birthdate could be used with other stolen data to take your identity. So keep that in mind as you’re answering questions.
i-Say. This site only provides surveys through Ipsos, the market research firm that owns it. The site offers fewer surveys than aggregators do, but you stay on i-Say for every survey, which makes the overall experience easier. Sometimes it displays surveys you already tried, which is confusing. You can cash out rewards starting at 500 points, which is equivalent to $5. For more information, check out the i-Say review.
Design and pre-test questionnaires: Designing the questionnaire carefully and then pre-testing it before fielding it to your entire sample is crucial to getting data that are valid and reliable. For example, careful questionnaire design and pre-testing can help reduce the chance that respondents may interpret the meaning of questions differently. Future posts in this series will tackle these important steps in much greater detail.
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 rewards for the MySurvey surveys are on par (or better than some) with most other sites. They offer $0.50 to $1.25 for every survey that you complete, with the shorter surveys only taking around 5 minutes to finish. When you want to cash out, you’ll have to accumulate $10, which is less than some of the other sites, and you’ll be able to get your money through a check, PayPal, Amazon gift card, or the more than 60 other gift card options. Sign up for a free mysurvey account HERE.
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.
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