Comment by myself248

Last time I went looking for LFL's, the map data quality was terrible. There's no way to flag a defunct location as defunct, since only the "owner" can edit their own entry. If they don't respond, it's a permanent ghost on the map.

I've taken to mapping them in OSM using amenity=public_bookcase (and amenity=food_sharing for the similar little free pantry). This way anyone can update the entries over the years.