The logo of mobile app "tumblr" is displayed on a tablet on January 2, 2014 in Paris. AFP PHOTO / LIONEL BONAVENTURE (Photo credit should read LIONEL BONAVENTURE/AFP/Getty Images)
The logo of mobile app "tumblr" is displayed on a tablet on January 2, 2014 in Paris. AFP PHOTO / LIONEL BONAVENTURE (Photo credit should read LIONEL BONAVENTURE/AFP/Getty Images)