This plugin takes words from a list and censors it in-game with a series of '*'. It censors all letter forms of the word.
/pcensor add [word] - Adds a word to the list
/pcensor remove [word] - Removes a word from the list
pcensor.* - Gives player access to all PCensor commands
pcensor.add - Gives player access to /pcensor add
pcensor.remove - Gives player acces to /pcensor remove
LINK: PCensor on BukkitDev