For my part, I've often wondered how many of my fellow MMORPG players spend much (or any) time on the forums. Inevitably during the course of a particularly polarizing discussion, someone will chime in to the effect of "only the hardcores even read these forums, 90% of the players are happily, you know, playing!"
While there is a kernel of truth in such statements, they are impossible to actually prove, much less quantify. That said, I'm interested in your opinions, Massively readers. Are you a regular reader (or contributor) to the discussion boards of your primary game, and if so, what is your gut feeling regarding the percentage of your fellow players who do likewise?