Earning extra spending money using paid-to sites

There are a ton of different paid-to sites out there. I've seen outrageous claims of people making hundreds of dollars for less than an hour's worth of work. Maybe the actual payment isn't really that high but some of these sites are actually legit operations that allows its members to earn some spending money on the side while others are scams sites that never pays its members.

This is my experiment to see how much money can be made from participating in these paid-to sites. I don't expect to quit my day job but hopefully I'll earn some extra cash on the side for not too much work and not too many spam mails. I will post my experiences with these different sites and hopefully you can garnish something from my experience.