Good question. Perhaps trolling and hostile (or at least "uncivil") comments are better dealt with by different methods than spamming and irrelevant submissions

Good question. Perhaps trolling and hostile (or at least "uncivil") comments are better dealt with by different methods than spamming and irrelevant submissions? Their motivations are probably different, at least, and comments are moderated by other people interested enough to read a particular thread's comments, while front page posts affect everyone equally.