Some pay with points that are redeemable for cash or goods and typically you must rack up a bunch to redeem them for anything of significance. Others may give you a gift card, discount, or another token of appreciation for participating. Many others pay nothing or only offer sweepstakes entries for completing screening surveys to determine your eligibility for other, paid surveys. A few don't pay much of anything, unless you recruit others, as in a pyramid scheme.
This site pays highly – at least $3 a survey and up to $6 for testing products. If you stay with them, the pay even increases by a few dollars, taking the wage far above the standard survey rate. Owned by the renowned New York market research company Nielson, Pinecone offers a variety of content and emails surveys to members as and when they are suited to you.
Most reviewed paid survey sites effectively promise not to share personally identifiable information or not to share it without your consent. It's an industry standard by which legitimate marketing research firms are bound. But many membership sites reviewed don't make either promise or do so only in a limited or wishy-washy way. Unauthorized go-betweens don't have to honor marketing research privacy standards.
Survey Club has been offering online paid surveys since 2005, and in the fast paced every changing world of the web that’s a reassuringly long amount of time. They are a bit of an acquired taste, in that they specialise in long, detailed surveys for high end clients rather than the quick and cheerful consumer surveys that you may be more familiar with. Whilst this does mean that you may have to commit a bit more time, it does mean that if you have the patience to persevere with them they pay more money than most survey and reward sites. They also offer local taste tests (see what I said about ‘an acquired taste’?), and secret shopper opportunities.