What It Is: Companies like Google and Yahoo give you information to search for, and you tell them how closely their results matched what you were looking for. Does a search for Lady Antebellum turn up sites about the music group or links to pre-Civil War period information? If you are Latina, for example, you might be asked to search the way a Spanish speaker might perform a search in English.
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These little jobs are done by people who log on to a company’s site and choose tasks, which could be as simple as clicking a link. Amazon's Mechanical Turk is one of the most well-known sites of this type. Also, there are crowdsourcing projects, which are similar to data entry, where companies engage an army of virtual workers to each do one small part of a larger project.