Nope, but it is harder to enforce than real swears. 

It still means the same thing, and is recognized as the same so ♥'s or ★'s are going to make it any better.

http://meta.stackexchange.com/a/22233


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Profiles, are a entirely different matter:  http://meta.stackoverflow.com/questions/251442/how-to-deal-with-user-who-use-abusive-words-in-about-me-section