So this is a fairly new site that I just started using. You go and watch commercials and get a certain amount per ad. I started about 2-3months ago and have gotten $15 so far. You start at being able to earn $5 a month, which isn't a lot. If you have people to invite you can get up to $10 a week. While it is only $20-$40 a month that still is enough for some gas or just to put aside for emergencies.
The bad side is that you have to have the window open so you can't be doing other things while watching. Also, there aren't many different ads so you'll be watching the same thing. I recommend going at the beginning of the week so you can build up ads to watch.