Re: Humans have, because it can be a way to get around profanity filtering.
LSE's website is a laugh when it comes to profanity filtering.
A good example is Babcock, the name of which cannot be mentioned in its chat forums, despite it being a household name. If anything, it draws attention to the offending word.
https://www.lse.co.uk/ShareChat.asp?ShareTicker=BAB&share=Babcock