Phatic

Phatic: Describes communication that performs a social task, doesn't deliver information.

From Merriam-Webster - Definition of PHATIC: of, relating to, or being speech used for social or emotive purposes rather than for communicating information — phat·i·cal·ly adverb. Origin of PHATIC Greek phatos, verbal of phanai to speak. First Known Use: 1922

From Dictionary.com - phat·ic [fat-ik] adjective: denoting speech used to express or create an atmosphere of shared feelings, goodwill, or sociability rather than to impart information: phatic communion.

All of "phatic" is social. But how much of social should be phatic?