Mechanical Turk: Amazon's Mechanical Turk is a resource for doing human-intelligence tasks, or as the site commonly refers to them, HITs. You get paid a very small fee for any given HIT and you'll need a good deal of volume to make a substantial amount of money. But it is a resource you can use in your spare time to generate a small income online.
Nick Reese has done an incredible job of building websites, developing outstanding searchable content and selling other people’s products on his sites. He gets a commission on every sale or lead he sends to the company. So he never had to create his own product in order to build his business (he has since branched out into other areas that you can check out on his new site). Pat Flynn also does an amazing job at this, and he actually shows how much he generates on a monthly basis from his affiliates here.
Being a blogger is one of the best ways to earn money online. Apart from this one can also make money by playing online real money games. Recently I have found a browser game – Wealth Words. It’s an online crossword gaming website where a user gets real cash money for solving the crossword puzzles right. You can add this to the list as well! It’s really entertaining to play and win.