Plugin: Bleep Filter

I like Bleep Filter. It makes filtering out profanity easy. All you have to do is add a basic bad word and it captures all the misspellings.

http://www.filterplugin.com/
or
http://ww.wp.xz.cn/plugins/bleep-filter/

http://ww.wp.xz.cn/plugins/profanity-filter/