I have been with them for a few months and received one paid study. There was a glitch while I was taking the study so I had to contact them to take care of it, they responded promptly and courteously and fixed the issue right away. The study was very interesting and I was paid $8.00 for 30 minutes of my time, a very fair payment. I received the check promptly. I've only received one so far but you might as well be on their list, it's no sweat to sign up with them!

I have been with Columbia for 3 months and I have recieved 2 different surveys. The first one was 10 minutes for $8.00 dollars and paid me withing one week paypal. The second one was a interactive survey with 3 parts, this pay was $25.00 dollars.