I know that profanity is discouraged in SO posts. However I recently saw a user with the F-word in his name. Just out of curiosity, I searched for other users with the same word and found many hits - see below.
Personally this does not offend me. I just wonder how others feel about it, and if it is something that SO should try to prevent.
Apologies if I've offended anyone by posting this image.
Edit - This questions is similar to, but not the same as: Possibly offensive usernames. That question asks about a particular name and if it is genuine or not. I am asking if SO should be doing anything to prevent users from creating accounts with potentially offensive names.