Depends on the amount of cursing and inappropriate behavior. I love me a well-placed dick joke, but sometimes people take that as a cue to just spam as much offensive stuff as they can. That I don't like at all. I have been known to unleash my inner 12-year-old here and there, but most of the time I stay out of chat.
I usually write a lot of bad words, really a lot, but I never curse or swear against others, unless they actually look for it, but for that case I rather go a step ahead of them and bite their weak spots rather than just swear.