issue being not every dumb post is offensive, and people on this forum seem pretty tolerant of stupidity. the true danger is that even if you ignore them, someone else wont, theyll comment, then a chain of comments will ensue in the thread, all going back to the person who is ignored. when i ignore someone, i dont want them posting in my threads. having that little box to click works fine for threads other than my own, but when its mine, i want them out.
obviously this is up to the mods, but it was something that definitely detracted from my experience on the board and was part of the reason for my withdrawal from card designing.