If you are someone who enjoys working in a team, or even someone who enjoys working on their own, crowd sourcing is a great way to earn some extra cash online. You can make money on the side by writing, translating and doing research. At times there are hundreds of micro jobs to do, increasing the amount of the chances you have to make money.
There is really nothing much to write about this. I think it´s something you’d be into. Check it out. Registration is free.