Mturk is a website where you complete hits for money. With Mturk, I make at least a few cents a day, which right now is better then any other way I make money online including my online jewelry making business (still working on it). Since Mturk is associated with Amazon.com I already know it's safe and reliable. I shop on Amazon all the time and so far, I have used all my earnings for my purchases on amazon.
Making $5 a day is my short term goal. Some people on the Mturk forums have claimed to make $100 a day! Wow, I got a lot of work to do. My long term goal to completed 1000 hits. I've heard once you get to that level, more high paying hits open up.