David Bratvold explains what Crowdsourcing is, the various types of crowdsourcing, and the necessity of clear instruction. In the Jimmy Wales TED talk, he explains his motivations for Wikipedia, and his aim to reach the entire world with Wikipedia. He talks about how highly successful it is-how he's able to use a volunteer system, and how the community is mostly complying with the standards of neutrality. He also talks about how he has administration votes for the deletion of fake articles, with litmus tests in regards to accuracy. It is basically using the democracy of hopefully unbiased volunteers to decide the fate of a page.
Aaron Koblin's TED talk examines the implications of monitoring human data. He talks about a crowdsourced music video as a tribute to Johhny Cash with the animations by the people involved.
I think the thing about crowd source data is that it needs an overarching standard to make it work. Without clear instructions or an obvious vision, individual components can falter.
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