Well, i don't think the attached nick is that bad, but more importantly, there IS an insim available that checks your driver name and will not allow you to change it to anything that could be deemed to be offensive.
For example, i was on a server and wanted to change my racer nick to 785 super noob, but when i set the name i could not join the race, and was given a warning for an innapropriate name. I then tried to use n00b, and then no0b, and still the same, nd i recieved a kick on the 3rd attempt.
What i am saying is, i guess this insim, whatever it is, must be configureable (is that even a word??) so that the person or persons running the server insim can choose what words are allowed and which words are not.