The following is a list of survey and product test sites I've had success with so far. This list will be updated as I go. If you arrived at this page directly and want to visit my home page (where I post survey opportunities as I find them), or you want to learn more about the surveys below, visit the Liquid Feedback home page or use the search feature at the top of this page. I feature several different survey companies on my blog, but here, I've listed the best survey companies at a glance.

List updated November, 2009

American Consumer Opinion - This is another great survey company that won't send you an overwhelming amount of survey invitations. They do, however, have interesting surveys that pay, as well as product tests (I think I've done more product tests for them than cash surveys, which is fine. A free full size bottle of something I'd use anyway is great).

Cash Crate - I thought this was one of those "too good to be true" deals. After all, I heard of people making several hundred dollars a month off of just Cash Crate alone. It turns out, it can be done if you have the time (to be honest, this is not a magical click-three-times and get money deals). Some of the surveys can be lengthy. But then again, I managed to make $5.00 in just a few minutes of figuring out how the site works.

Centercode OnlineBeta - OnlineBeta offers you a chance to participate in beta tests of unreleased products of all types. Sign up/register, and they'll contact you when new testing opportunities become available. Want a chance to test the latest mouse, keyboard or even a computer? Then this is the test panel for you!

Global Test Market - If you're in their targeted demographic (sorry, I can't provide hints), you'll make a decent amount on this site. They send several surveys per week and even give you a few points (rewards) even if you don't qualify. I recently cashed out 1,000 points, which I assumed was equal to $10.00. Instead I received a check for $50.00!

HCD Surveys - This is another great survey company that won't send you a million emails per week. HCD has short, interesting surveys and when they email you, they'll tell you the amount offered up front. Typically, surveys take around ten minutes or less and pay about $1.00 each. Hey, it adds up. Looking to earn even MORE cash? This company offers a great referral program. Get .50c for every friend who signs up and $1.00 when they complete their first survey. Think that's not a lot of money? It is when you consider you're doing nothing to earn it!

Lightspeed Panel - Complete surveys for points that may be redeemed for prizes, cash (PayPal) or Amazon gift certificates.  Points per survey varies.  Surveys are usually interesting and don't take very long. 

MarketView Research - They offer drawing entries and the occasional product test. I tested a full size bath and beauty product for them.

Mindfield - This is a great testing company and if you're in the right demographic (sorry, I can't give hints), you can make great money per survey and test products. They tell you up front how much each survey is worth (how much it pays). Surveys are sent out frequently. 

MySurvey.com - Mysurvey surveys aren't very long and they're usually interesting. You'll accumulate points for taking surveys and then request a check when the balance is high enough. Every 1,000 points = $10.00, and you'll be able to see beforehand how many points each survey offers. And you can accept as many or as few survey invitations as you wish. Personally, I accept as many as I can if I have the time.

Netverdix - This is a great panel. Why? Well, even though they don't send invitations out very often, the surveys are short, usually interesting and they pay cash (check). Most surveys take less than ten minutes and pay $1 - $3.

Pinecone - Sorry, I can't provide a link here (the Pinecone folks prohibit that). You have to find a link or a banner on your own. Pinecone sends occasional surveys that pay $3.00. They used to pay $5.00 but $3.00 is still pretty good for answering only a few questions (Update: They're offering open enrollment. Links are posted on other sites. Google the words "Pinecone USA" and use some basic investigative skills. You'll find it!

SayNation - Earn points towards gift certificates (such as Barnes & Noble, Amazon and PayPal) and various prizes. Surveys are interesting and don't take very long. Use referral code 0726245777 when you sign up, and we'll BOTH receive signup points!

SheSpeaks - Try out products in your every day life and keep them. This site is mostly for product tests and not cash or gift certificates, but I've already tested beauty and bathroom products for them and also a food product (the item was free and they also sent additional coupons to give to friends).

The Stanford School of Business (the GSB Behavioral Lab) - An actual University site, surveys are human-interest-related. Stanford usually pays survey respondents in $5.00 Amazon gift certificates. Sometimes survey incentives are chances to win gift certificates of a high denomination.

SurveySavvy - They typically pay anywhere from $1.00 to $10.00 per survey (easily track how much money is in your account and then request a payment via check). Easy surveys that don't take a long time. After you sign up, refer a few friends (SurveySavvy will give you the referral link) and earn cash for (literally) doing nothing! This is one of my better earners!

Synovate/Global Opinion Panel - This is an excellent survey company. Not only do they send out a lot of product tests, but they also reward you in the form of points (which can later be redeemed for cash). Most surveys don't last very long and pay several hundred points each (5,000 points equals $5.00).

UCLA School of Management - They pay either in Amazon gift certificates or PayPal, the surveys don't take very long, and are usually interesting. Surveys pay between $1.00 and $5.00.