Ok this may be old news but I heard about "I know where your cat lives" as part of the promotion of the Big Bang Data exhibition currently showing at London's Somerset House (bigbangdata.somersethouse.org.uk). 

I have had a few conversations this week, personal and professional, about data privacy and what we reveal about ourselves through our daily digital footprint.  

I went to the site - it is fun and I love cats. What interested me, from both a data analytics and security point of view, is how clearly it demonstrates what can be done when you analyse information accessed via publicly available APIs in photosharing sites via specific algorithims using the power of a supercomputer.  

I will go to the exhibition. I will not take my cat.