I may not be speaking for members as a community here, but I have just seen a not so pleasant username including swearing.
Would it not be wise to include the swear box into username creation? If the word was posted it would be blocked, so why not with usernames, after all it is more obvious! I'm not against swearing, but to use it inappropriately in a username with no meaning completely out of context is not needed for our community.
Of course members should have freedom in creativity, but I think more obvious swear words should be filtered out.
Kudo's if you agree, I'd say it's pretty urgent, to prevent it from happening again.