Blocking on Twitter now more like 'mute' (Update: Changes reverted)[ Fri, 13 Dec 2013 06:56:26 GMT ]A change to how blocking is done on Twitter is causing a ruckus on the service. Instead of both hiding a user and preventing them from following you, blocking now acts more like a mute button — they can see your tweets and respond all they want, but you won't see them.