The document discusses Amazon Mechanical Turk (AMT), a marketplace that allows requesters to post human intelligence tasks (HITs) and workers to complete them. Typical tasks include transcription, content generation, and object classification. Most HITs pay less than $0.10. AMT sparked the growth of other crowdsourcing platforms and startups that organize crowdsourced work. The document also references research papers on using crowdsourcing to answer database queries and process large amounts of data.