There was only one thread that I ever hated that continually popped up, recall that faher (or was it grandfather?) that impregnated a child? They were apparently in deep discussion but the title of the thread popping up like that kept grossing me out.
Other then something like that I dont see why anyone would get annoyed at a post being bumped to the top, it just means its active. I pop in but I dont say too much.