Slightly related fun story from 2014: [1] http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinflu

Slightly related fun story from 2014: [1] http://ghostinfluence.com/the-ultimate-retaliation-pranking-my-roommate-with-targeted-facebook-ads/ http://ghostinfluence.com/the-ultimate-retaliation-pranking-... Discussed on HN earlier: [2] https://news.ycombinator.com/item?id=8330931 https://news.ycombinator.com/item?id=8330931