If I was a moderator, I would be friendly when inducing punishments like infractions, but if there is a user who has been around on PC for a while, and should have the knowledge not to... say... revive month old threads, I would just bluntly tell them not to revive month old threads. Obviously, repeated offenses would spark my meaner side and I would INFRACT THEM INTO NEXT WEEK! Just kidding, but repeat offenses are always annoying, you know what I'm talking about, right guys?
I would also not take kindly to backchat or disrespect. I would obviously handle someone calling me 'gay' or 'homo' on PC with strictness, but because I am actually a homosexual, seeing 'gay' used in that way does annoy me, but you gotta keep your cool and treat it like any other mod would, right? :)