Forget friending. A new Facebook app allows users of the social network to identify and share people, places and things as “enemies” for all to see. The app, called EnemyGraph, lets you list anything with a Facebook presence — ranging from “friends,” to foods, to products, movies or books — as an enemy. Since the app launched March 15, it’s seemed to appeal especially to users with a liberal bent. Some of its most-selected nemeses so far include...
