Crowdsourcing is the act of outsourcing tasks, traditionally performed by an employee or contractor, to an undefined, large group of people or community (a ‘crowd’), through an open call. Jeff Howe, one of first authors to employ the term, established that the concept depends essentially on the fact that because it is an open call to an undefined group of people, it gathers those who are most fit to perform tasks, solve complex problems and contribute with the most relevant and fresh ideas.
For example, the public may be invited to develop a new technology, carry out a design task (community-based design and distributed participatory design), refine or carry out the steps of an algorithm (human-based computation), or help capture, systematize or analyze large amounts of data (citizen science). The term has become popular with businesses, authors, and journalists as shorthand for the trend of leveraging the mass collaboration enabled by Web 2.0 technologies to achieve business goals.
The Daily Omnivore 
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