2 The most they work, the least you're paid .

"Crowdsourcing is a neologism for the act of taking a job traditionally performed by an employee or contractor, and outsourcing it to an undefined, generally large group of people, in the form of an open call. For example, the public may be invited to develop a new technology, carry out a design task, refine an algorithm or help analyze large amounts of data", according to the free encyclopedia Wikipedia, that is itself a form of crowdsourcing, in some way, even if its contributors are not paid.To sum up, amateurs and volunteers can be paid if they contribute to the realization of something (a project, a photograph, resolving a problem, ...). Even if that is not well paid, generally, a large number of "crowdsourcing acts" can be a way to earn some money within helping someone.