When engaging in Chat in World of Warcraft, or otherwise utilizing World of Warcraft, you may not:The Terms of Service overrules your logic for this purpose. But what is logical reason, anyway? World of Warcraft has a T (Teen) rating, and not for profanity. There is, obviously, a "Game Experience May Change During Online Play" notice, which when combined with the enabled-by-default profanity filter is ammunition against outraged parents claiming their child doubled their vocabulary since acquiring the game.
(i) Transmit or post any content or language which, in the sole and absolute discretion of Blizzard Entertainment, is deemed to be offensive, including without limitation content or language that is unlawful, harmful, threatening, abusive, harassing, defamatory, vulgar, obscene, hateful, sexually explicit, or racially, ethnically or otherwise objectionable, nor may you use a misspelling or an alternative spelling to circumvent the content and language restrictions listed above…
The profanity filter exists if you or someone else happens to get offended by whatever profanity may be used in defiance of the Terms of Service; it is not license to swear. If the profanity filter caught everything and was impossible to circumvent, then there would be a logical reason to treat the profanity filter as an opt-in.
Of course, the Terms of Service aren't zealously enforced—I seem to recall a statement from a GM along the lines of "we don't care about profanity in guild/party/raid chat unless it's reported," but don't quote me on that.
