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Amazon\'s Mechanical Turk halts new customer sign-ups, effectively winding down

Amazon Web Services will stop registering new customers for its crowdsourcing service Mechanical Turk, which has operated for more than 20 years. Launched in 2005, Mechanical Turk is a marketplace where users post tasks that are hard to automate, such as CAPTCHA verification and sentiment analysis, for others to bid on and complete. Amazon says existing users will not be affected. Reports said the service is in maintenance and may be nearing closure.