This American Life has an excellent exposé on this topic, from 2013: http://www.thisamericanlife.org/radio-archives/episode/490/transcript http://www.thisameric

This American Life has an excellent exposé on this topic, from 2013: http://www.thisamericanlife.org/radio-archives/episode/490/transcript http://www.thisamericanlife.org/radio-archives/episode/490/t...