I would say that once you start, keep an Excel spreadsheet going and keep track of EVERYTHING.
As people on this board know, I HAVE run into a few bad eggs, and with proper documentation, they will usually credit your cc back.
I have one credit card that I use ONLY for on-line purchases. That way, I can easily keep track of companies and what they charge me.
What was posted above is true. You cannot make a living doing this, but you can make a few bucks. I try to spend about 1 to 2 hours each day on QR and SR.
After only a few months, I was able to make my way through both sites. I bought my Digital SLR with my first round of checks, and now, I'm saving for Christmas. Not a lot of $$, for sure, but I may $100 last month, between the two sites.
The big bucks are usually through shopping (which I haven't done a lot of recently) and the paid trials. Once you work your way thru the paid trials, you have to rely on the "change." BUT...all the change does add up!
Start out with either SR or QR. Their owners are really nice (Tricia is on these boards sometimes), they are honest and RELIABLE, and their sites are easy to navigate.
I tried SwatCash back in June, but half of my offers never went thru, and when I asked them about it, they just deleted my pending folder, and I never heard from them again. I'd say--keep clear of them--just based on my experiences.
So, keep records and just have fun!
Deb