For A Much-Hated App, Facebook Messenger Sure Is Popular
Facebook’s stand-alone messaging app has vocal critics, yet it's now the second most popular app, according to analytics firm ComScore. What gives?By Evan Thomas | September 6, 2015
Facebook Messenger is more popular than ever, and for some familiar with the social network, that notion might be a bit of a surprise.
Not bad, considering "users did not download it en masse until Facebook stopped allowing them to respond to private messages in the main Facebook app."