What Are The Legit Internet Survey Sites?

I am currently unemployed and a full time student. I do various I.T. service work and usability testing, but those business ventures are too small to rely on as I had been working full time up until recently. Thus, I am reliant on my better half, the savings accounts, and other means to put food on the table. I know that the vast vast majority of “Internet Survey” sites are fraudulent or spamming sites (some spam is ok, if it means decent payment.) I thought they all were, until a game showed me one that I have is helping me pay for an online game I am playing. It got me interested because I am listening to radio ads and giving feedback and input; and earning roughly $2 for 5-10 minutes of my time.
I am trying to sort through all the BS sites that are out there. I am looking for legitimate sites that I can fill out consumer survey’s for money. I know I am not going to get rich off of this, and I am not expecting to make a career out of this. It would be helpful to have a little extra cash every month to help put food on the table until the business ventures do better OR I get another job. I would gladly commit 15 minutes of my time for $2.50+ 5 minutes for $0.75+ . You are also welcome to say this is a pointless idea as well. Information about personal experiences is a plus.
I am willing to share information about myself for advertising purposes with the exception of health information; and a few other private matters. I will select a best answer so long as there is at least one serious attempt to answer this question. This is my first question on yahoo answers.