Definition - What does Facebook Like-Gating mean?
Techopedia explains Facebook Like-Gating
As of November 2014, Facebook reengineered the site to disallow the function of Facebook Like-gating. Businesses and other page owners can still ask visitors to "like" them on Facebook, but they cannot hide Facebook Like-gated contents away behind a virtual wall.
The move toward banning Facebook Like-gating promotes openness in Web communications and forces profiles to acquire Facebook "likes" through organic and natural user choices, not through incentives.