I am pretty sure I see at least 1 or 2 every day that is at the very least questionable if it should be allowed. It is very obvious the people in question were trying to come up with a way to get around the censor and they were successful, it's just a matter of how far you want to go with what they were attempting to say/make their names, some it is very obvious others take a moment to realize. Either way I'm pretty sure it's a ToS violation from Microsoft and with the stuff they have talked about doing to enforce that kind of stuff in the future, it's not a good idea if you like being able to play on that GT on XBL.