My home group has a requests in our format bearing on these issues and we have [usually] dealt with abuses as they come up. It's something I highly suggest that other groups consider with regard to what their group conscience should be. Every time I hear someone using language generally considered impolite I shudder, imagining some pillar of the church congregation passing by in the hallway at that moment and overhearing us. Personally I have little objection to people using whatever language they wish, but I also think it's important that many people do take offense at such language and that we need to be especially wary with regard to our landlords.
Not too long ago I heard something that covers my feelings on this subject very well:
The absence of profanity offends no one.