"This process can occur both online and offline, and the difference between
crowdsourcing and ordinary outsourcing is that a task or problem is outsourced to an undefined public rather than a specific body, such as paid employees.
Crowdsourcing is related to, but not the same as, human-based computation, which refers to the ways in which humans and computers can work together to solve problems. These two methods can be used together to accomplish tasks."
(Wikipedia,
Crowdsourcing, 2012, visited 2012-06-06)