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Re:How Crowdsourcing Turned on Me by Animats on Thursday October 23, 2014 @11:36PM (#8502026)
Bad design. Anybody could mess up the job. In any large, anonymous group, there will be a certain number of assholes. Of course it didn't work. Ask anyone involved in running an IRC channel, or a MMORPG, or a factory.

Given the problem they were solving (reassembling images shredded into strips) they needed something where, when two strips were put together by a human, a program decided if they matched closely, and, if so, locked them together for further editing. That would constrain the workers to make forward progress. You might need an unlock capability if there was a false match, but that should take the cooperation of several people.

Re:How Crowdsourcing Turned on Me by xerophyte12932 on Friday October 24, 2014 @01:10AM (#8502232)
>In any large, anonymous group, there will be a certain number of assholes. Of course it didn't work. Ask anyone involved in running an IRC channel, or an MMORPG, or a factory.

My favourite example: Twitch plays Pokemon

Re:How Crowdsourcing Turned on Me by skybrian on Friday October 24, 2014 @12:05AM (#8502091)
Or just versioning and the ability to revert, like Wikipedia has.
Re:How Crowdsourcing Turned on Me by clockwerx on Friday October 24, 2014 @10:18AM (#8503753)
Probably better is something like tasks.hotosm.org's "Done" and "Reviewed" approach, and requiring accounts.

Obvious vandalism attracts a ban quickly.

Re:How Crowdsourcing Turned on Me by xxs on Friday October 24, 2014 @03:34AM (#8502516)
They would need huge amounts of versions and then need someone manually to observe. With a single attacker would be easy, though.
Re:How Crowdsourcing Turned on Me by xxs on Friday October 24, 2014 @03:33AM (#8502515)
if they could do the matching they would have not needed the human force.
Re:How Crowdsourcing Turned on Me by Animats on Friday October 24, 2014 @02:34PM (#8505161)
Doing all the matching automatically is reasonably hard, but merely checking a human match isn't.