Quoting
To "flood" a thread is an imposition on the group, like two people monopolizing the dining room at a dinner party. Take the conversation out onto the porch. That's what PM means to me. If it's comfortable, chat is like a date--private conversation across a booth table, that's all. No one learns social skills on the internet, but can mature social skills be pressed through the wire? That's the issue here.
You have made good points here, AV. The only thing I'd wonder about is this, a forum is, for many, a rather time-consuming habit. To quickly post on the forum is one thing, but to get caught up with private messaging to even a few members could push one's forum usage right out of sight.
I think the occasional bantering back and forth is fun and not particularly unpleasant for 'bystanders', as it were, and in keeping with your analogy of the dinner party, often the most enjoyable parties do involve a short session of two people running a bit of an amusing tete a tete.
So, I think you're partially right, but I also think things are going swimmingly on this forum, don't you? I wouldn't want to see restrictions on such momentary diversions to which you refer. At the risk of sounding a bit maudlin, I seriously do feel enriched for the pleasure of getting to know you all.