One of my favorite sites to make money with is QuickRewards.net. I've been using this site since Oct. 2009 and they have always paid me and I've never had any issues with them.
At QuickRewards you can make money by taking surveys, clicking on links, reading e-mail, entering contests, taking quizzes and polls, and playing games. They also offer cash back at just about every store you can think of.
One of the things I love about this site the most is that there is no minimum amount of money you have to reach to get paid. That means if you just have 1 cent in your account they will pay you through paypal when you request payment.
So far since January 2010 I have made $93.10. And that was just doing surveys and clicking links! I could have probably made more but there were some days I was too busy to do anything online. I usually just let my earnings accumulate until the end of the month and then I request payment.
Out of all the ways to make money online QuickRewards is definitely one of my favorites!