This powerful tool should be enabled at all times for security and anti-spam reasons. Profanity filter ensures that all the major offensive words and phrases are always replaced by asterisks (*).
You can add or remove particular blacklisted words by clicking on the Edit blacklist keywords button. Please note, that adding (*) at the end or the beginning of a word prohibits any word with that string of characters from being used.
To boost safety and keep high standards, you can additionally check the Block profanity option. When enabled, users will be unable to send messages containing the prohibited vocabulary from your blacklist.