Well I've been contemplating sharing this with you guys seeing as it does involve a lot of work, but in these hard times making $125 is worth a few spare hours. You can make more depending on if you want to gamble. I only did the offers that cost nothing to sign up for, but if you want to try the one's that cost you that's your business.
First what you need to do is go get a pre-paid credit card (real credit cards work too, but if you screw something up all they can do is take the $10 you have on your pre-paid card). The one I used was GreenDot. They charged me $10 to put the money on and they charge $5 a month for having the card. They also charge you $1 every time you use it.
Once you have the card, go sign up at inboxdollars.com. Start doing their free offers. You'll make about $10. Then start doing the free trial offers. Some good one's include Netflix and Blockbuster. Make sure to read the terms of cancellation CAREFULLY. All you have to do is sign up and once the trial is over cancel. You'll most likely only be charged the dollar for using your card but be careful! Some of them have really sneaky terms so you have to read it all. One of the worst is the Video Professor. It costs $7 to sign up (plus the $1 for using your card) and inboxdollars will pay you $40 for doing it. BUT, if you don't cancel the order in three days, Video Professor will charge you $240 and send you his entire kit.
This isn't easy and it's certainly not reliable income, but you can make some good money. I've made almost $600 so far by doing this. When you run out of good offers, wait a year and come back. There'll be more that you can do. But remember to look at the terms on your prepaid credit card! If they charge you $5 a month you don't want to own that thing for a year!