The point of each survey is to present you with a topic you're interested in and qualified to discuss for the benefit of the researcher. Surveys range in time required, from very short to quite long. Because researchers are looking for opinions only from certain segments of people, you may find you have to try a few surveys before you're qualified to give your opinion on one. Keep at it, and you'll eventually find one that's right up your alley.
One of the oldest and longest running survey sites, Vindale Research is a legitimate option for making some money from filling out surveys. Based in New York, the company offers both traditional surveys and evaluations, by testing products or online services. It’s free to sign up, and surveys pay between $1 and $5 each and product testing starts at $5 and moves up from there. The site claims significantly higher rates of pay, but as this involves slightly inflated pricing, for example discounting fees you may have to pay out to join subscription sites before receiving your end payout, they won’t be included here.
You can expect to earn $2-$5 for most of the surveys in general. For some special surveys you can earn up to $50 per survey but those are rare. Harris Poll also conducts paid focus group studies where you can earn $50-$100 per study. Usually these focus group studies are 1-2 hours long where you interact with other participants under a supervision of a focus group moderator.
IOCS is a not-for-profit research organization that conducts studies and experiments on shopping-related behavior – things like how we, as consumers, evaluate products, how we make the buying decisions, etc. Although the focus is mostly on shopping related behavior, some of their experiments and studies include broader areas of marketing, psychology, and economics.