One guy used them to prank his roommate: http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinflue

One guy used them to prank his roommate: http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinfluence.com/the-ultimate-retaliation-pranking-... (I was kind of disappointed that the "hypertargeted ad" link in the article went to a generic how-to article instead of that post.)