@martybarker,
Seriously, I do find it useful for a very small number of people...and more when I seem to be in a mood to get myself dumbly involved in stupid personal insult-fests.
That is, I can add a few when I seem especially crotchety or sensitive.
I have used Firefox in the past a few times, just for this option, because it can just get so wearisome when you have to see really horrible, irrelevant, highly repetitive or really distressing or incoherent posts all the time just to read a thread etc.