There are serious economists who look at these issues. The book Snipers, Shills, and Sharks, http://press.princeton.edu/titles/8435.html http://press.princeton

There are serious economists who look at these issues. The book Snipers, Shills, and Sharks, http://press.princeton.edu/titles/8435.html http://press.princeton.edu/titles/8435.html is a great summary of the research that includes this approach among a hundred others.