The story goes that the writer George S. Kaufman was at a dinner party where one lady monopolized the conversation by talking incessantly. Eventually Kaufman said to her, "Madam, do you have any unexpressed thoughts?"
Many people, businesses, and bands market themselves like the lady at the party. They try to drown out everyone else by posting constantly, even though they don't have anything to say.
But that is not communicating. That's just noise.
Better are the people who post less frequently, but post things that are interesting, entertaining, or thought-provoking. - Cris