By way of introduction -- you see, I'm new around these parts -- a story ...
At my last job, some years ago, I once added something to the comments section below a colleague's story. This colleague, like nearly all of my colleagues, was a real sweetheart of a guy. But even though my comment was innocuous, suggesting that perhaps one posited explanation for a particular phenomenon might have been better than another, I heard through the grapevine that my colleague was unhappy about it.
Without meaning to, over the years I'd annoyed most of my other colleagues ... and nearly all of them with reputations as incredibly nice guys. So I figured it must be me. I hastily e-mailed this particular colleague to apologize.
His response: "Rob, no problem at all. I just thought the comments section was for them, not for us."