The internet, mobile phones and other recent electronic means have created a sort of memetic compulsion to be in constant communication with everybody, regardless of the significance of what we have to say. I think the notion that somebody ought to post regularly is part of this. Taken to its extreme, as it frequently is lately, we see sites such as facebook announcing to the world every five minutes what everybody had for breakfast and, failing any sort of exchange of trivia, there is a perpetual deluge of mindless aphorisms and grotesque pictures.
I don't know about anyone else but I do not get a musical idea worth sharing more often than about once a month. It is like a column in the paper, where, because of compulsory regularity, something must be said regardless of its worth or interest. Although I have high regard for many people here, I certainly do not want to know their every thought and movement, musical or otherwise. If a person does not post, does not wish to communicate, that is quite normal; it is the notion that such action is unusual which is peculiar. Internet communication is a tool and an option, not an imperative.