To answer your question to me, no I usually don't get those kinds of comments, in fact it is rare I get ANY comments. The blog that the sizable comment exchange happened on was the result of a flood of traffic the likes of which Blogger Beer has never seen before. That blog drew roughly 520 visitors to Blogger Beer when I was averaging about 61/day up to that point.
It was a fortuitous trackback that did it and nothing real crafty or clever on my part.
Thanks piping up I was starting to feel real lonely!