I saw this subject mentioned in Dan Ariely's Ted Talks. Here's his specific blog post about the subject. It would clearly work. http://www.predictablyirrationa

I saw this subject mentioned in Dan Ariely's Ted Talks. Here's his specific blog post about the subject. It would clearly work. http://www.predictablyirrational.com/?p=235 http://www.predictablyirrational.com/?p=235