Quitting facebook is probably as hard as quitting any addictive drug.
As such, I propose we build in every city a places where people can socialize outside of facebook, kinda like a recovery zone. This zone, modeled after the AA meetings, should have refreshments, like say alcohol, and provide entertainment to keep the addicts minds away from FB, like say darts or billards. It should have ample seating for everyone to talk, or not, and maybe even the option for group sing alongs to enhance social cohesion. Internet access should be restricted and maybe live entertainment can be provided on weekends to keep you away from FB when you have so much free time.
Further, we could make these places open to the public and we might even take our cue form that public access to call them "pubs" so people know where to go if they want to get off FB.