I have been hearing this PTC sites (paid-to-click sites) where you can earn coins. The mechanics is very easy. All you have to do is to register with the site and click on the icons or posters of the advertisements and you earn a fraction of a cent. From a rough estimate, you can earn 1 dollar by clicking and clicking for 2 to 3 hours. Pardon me if you are on a PTC site but I was advised against it because it can cause mental fatigue. You click on an icon and wait until the full page is displayed before you can click again. And those half a minute of waiting had earned you a fraction of a cent, huh.