content-free: [by analogy with techspeak `context-free'] adj.

:content-free: [by analogy with techspeak `context-free'] adj.
Used of a message that adds nothing to the recipient's knowledge.
Though this adjective is sometimes applied to {flamage}, it more
usually connotes derision for communication styles that exalt form
over substance or are centered on concerns irrelevant to the
subject ostensibly at hand. Perhaps most used with reference to
speeches by company presidents and other professional manipulators.
"Content-free? Uh... that's anything printed on glossy
paper." (See also {four-color glossies}.) "He gave a talk on
the implications of electronic networks for postmodernism and the
fin-de-siecle aesthetic. It was content-free."
-- The AI Hackers Dictionary