The general rule of thumb:

If it's caught by the "filter" (which will automatically substitute symbols whenever someone uses a "nasty word") then you can feel free to say it in your post ... because nobody else will be insulted because they'll only see the symbols. Do *not* try to circumvent the filter by putting spaces or periods or anything else.

Try to be polite, if you think you're going to swear a lot and whatnot - and if its not caught by the filter - then just add a warning to people beforehand, because lots of people don't like bad language.

Admin/moderators will edit your post if its over the top, but if you ever have a question about something you've said in a post - you can PM one of us and we'll take a look before you post it for everyone to see!

Hope that helps some.