I think most of the members of this board have enough sense and manners to use terms like Jap, Kraut, Yank, etc. in the context of simming/gaming and not as an insult directed at another member. This is one of the better discussion forums out there on the internet in terms of respect from what I have seen. I do not forsee too many problems arising from the slang used around here and believe that if somebody was to direct derogatory terms towards somebody intentionally then they would feel the wrath of a good number of other members. What we have to keep in mind, as most of us know, is that we're talking not just about a game but using it as a way to live history.
You're all a good bunch of mariners!