Earn opinion points per survey 10 points = $1.00,Minimum cash out is $5.00, Must be 18 yrs old, US and Canada residents only. This is my favorite survey company. They send a lot of surveys, and they pay well.

Mysurvey
A close second to Opinion Outpost- Also awards points that convert to checks,100 Points= $1.00, minimum cashout at $10.00, Mysurvey has interesting surveys, most are short, and you automatically get some points even if you don't qualify. Also has a lot of product test which are always cool.
Acop
Great Survey company, They don't send out as many surveys as some of the others but they pay well, normally between $4-12, I have done a few product test for them too. The checks come fast without having to request them.
Globaltestmarket-
Sends out a ton of surveys, and even if you don't qualify they still give you at least .25, 100=$5, minimum cashout at $50. Most surveys Avg 2.50-4.00, sometimes you will get 500-1000 points surveys and product tests. Globaltest market is one of my top ten. www.globaltestmarket.com
SurveySavvy- minimum cash out at $1, Surveysavvy pays pretty quick after requesting your money. minimum age is 14, they will except globalmembers.
Your2cents- Minimum cash out @ $10 Sends about 5-6 surveys a month, worth 1-3 dollars a piece. Sometimes offers higher paying surveys for select demographics.
Surveyspot- Sends a ton of surveys about 25% are for cash the rest are for sweepstakes. $5 dollar minimum cash out. Surveys vary between $1-$20 a piece. they also have a lot of product tests.