Well, another method to make money online is through adsense. You can Monetize your Website or Blog with BidVertiser too. It is a very easy PPC method. Just post nice stuffs, and let people click it. :D
To me, I feel that blogging is the easily method to do this. Just post a topic and make sure your ads is related to your topic. There were claims that you can actually play with google adsense just by posting a topic that will trigger users curiousity to click the adsense.