Project Payday

Ok, so I am going to try something new. It is called Project Payday. I am kind of nervous about starting this. Usually, I stay away from things that ask for your credit card. It is free to join. Once you join, you complete offers. I am sure you have seen them- "Try Netflix for 4.95$ a month...if you are not satisfied, you get your money back" type thing. Basically, you "try it" and if then cancel (if you want) and make an average of 25$ doing this. I don't like the fact that I am giving out credit card info and have to call back and cancel every trial that I don't like...but it is just too tempting for me. If anyone has tried this and if it works or doesn't work, please let me know. If not, I will be the guinea pig!
UPDATE: This seems to be a big fat...scam. I signed up for some service, that ended up costing me 10$. I was supposed to get $15 in return. That did not happen.