Crowdsourcing

http://www.crowdsourcing.org/

http://en.oreilly.com/et2009/public/schedule/detail/5369

http://www.blip.tv/file/1868958/

ETech 09: Nathan Eagle, "txteagle: Crowd-Sourcing on Mobile Phones in the Developing World"

slide 14: Accuracy Inference - Expertise Inference (95% accuracy on surveys)

also: http://txteagle.com/about/buzz