See e.g. this: http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinfluence.com/the-ultimate-retali

See e.g. this: http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinfluence.com/the-ultimate-retaliation-pranking-...