The point is this: Being "open" on the DB boards gives people who are NOT vested in one's own situation an opportunity to say, "Here's what I see." That's quite a different animal from saying, express or implied, "You're just like me; you're just like my h/w" and then wielding a judgment.
It's also quite a different animal from saying, as one often sees here there 'n' everywhere, something to the effect of, "Well, my sitch sux, and my spouse cheated; so because your spouse is superficially similar to mine, based only on the scant details you've provided, your sitch sux and your spouse is cheating, and if you deny that I'll get in a hissy-fit."
From my POV, what the boards do is give people who have no real -- i.e, authentic -- investment in how your situation turns out (i.e., I will be perfectly content if my friend @aliveandkicking triumphs after divorce OR triumphs over divorce) to look at things with a more objective and/or analytical eye than one can do on one's own, trees getting in the way of the forests and what-not.
