what are surveys and how do they work

@sarath49 (762)
June 12, 2010 8:44pm CST
it came to my knowledge that surevys pays you more that ptc about $4 or so. i want to know how do these sureveys work and waht do we have to do there to earn, are there free to join survey sites that pays more and has lot of surveys. and that pays via paypal.
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