Not supposed to. Survey companies are out there to get supposedly results for whoever ask for the results, but the very fact they offer compensation for the survey skewed the results. Real companies are now weary of the surveys, but people keep thinking they can get paid doing very little.
Here's a proven way to make money: write hubs. You can probably write about 1 hub per hour (or more!) and make money off Google Adsense. When you have several hundred hubs all making pennies a day, they add up. I had written some blogs over past year or so and I was very surprised to see that my Adsense account is up to 60+ dollars, and I wasn't even TRYING to promote any of it! No Search Engine submissions, no cross-linking, no nothing. It's hard work, and I have found some people cheat by rewording other people's articles or even hubs, but it can be honest work. You probably won't get rich doing it, but you can probably make a few bucks here and there.