The other day, I replied to a comment by Benjamin Morley saying, basically, nice idea but now the players know that one. It may have come off as defensive or catty or something of that sort, but I didn't intend to be. I was just stating a fact.
I had a side conversation with one of my players who reads this blog and said, in short, if I +1 something, link something, or comment on something - nevermind write it on my blog - I'm assuming everyone will see it.
This is basically because my players read my blog, and the comments.
So what I do is treat all of the things on my blog as common knowledge. The things I post are widely and officially known. Rules and whatnot are proven scientific facts, and those who traffic in such skills and abilities know them like we know fire is hot.
The commentary by my readers? Tavern talk. Overhead stuff in Stericksburg or Falcon's Keep or in Swampsedge (the temporary new base, as of Sunday's game) between guards, residents, veteran adventurers, know-it-alls and know-nothings, sages, priests, etc. - it's all out there. Is it true? Maybe. Is it false? Maybe. Did a commenter nail the secret meaning behind a puzzle or a trick or trap or monster action? Perhaps. But maybe they're wildly off-base but oh-so-plausible.
Which is fine - I welcome all of the commentary. And I don't worry about its effect on my game. It is, instead, folded into the "reality" of this strange world where you can live and die raiding tunnels full of monsters for treasure.