Though this is a public forum, I feel like this is a place where myself and others can have a kind of "group therapy" session, about certain irksome issues, in a relatively "safe" environment.
Personally, Mr. Diva is the only one I've ever shown the results of a particular thread to. (The BenefitBoy/EntitlementGirl situation comes to mind here.) As an OP on a particular topic, I wouldn't consider showing the replies in the thread to the subjects of my OP. As stated above, it's much like teaching a pig to sing. And as Zip so aptly stated, would probably be even less well-received by the person, since I'd chosen to discuss the issue with strangers before speaking directly to the "offender."
But if another OP decided to show their thread to the subjects in their OP...I guess that's up to them to decide. It wouldn't change the comments I post, because I'm already attempting to edit them for public consumption anyway.