Users can earn by completing task such as writing reviews, data entry, reviewing emails, proofreading, web search and others.
Users can be paid via paypal, bank transfer, bitcoin or mobile reloads. Users needs to accumulate 50 USD worth of points in order to withdraw their earnings.
A lot of task are posted everyday. A user can work on any task they want as long as they meet the initial requirements for the task.
Don't worry its free.