There's been a round of discussion about feedback and comments going about LJ; based on one of the questions of comment etiquette I want to say that anytime anyone wants to make a comment on my journal that's not addressed to me but is aimed at another commenter, IT'S FINE. You can:
-pop by to talk to someone you haven't spoken with in a while, or
-discuss the point a commenter makes, or
-go off on a tangent, or
-just say, "Nice icon!" or
-make plans for the weekend with each other,
it's all good. Be my guest, have a good time, don't worry about whether the comment is addressed directly at me if you want to comment. Have fun.