Some time ago now I created myself a Skype account. I've since amassed a number of contacts, and also realised that the username I chose really isn't one I wish to continue using, for a variety of reasons.

Services like Twitter and GitHub offer username-change functionality; I can't find this in Skype. Am I missing something, or does it just not exist?

If, as I suspect, it doesn't exist, is there anything I can do to migrate my contacts across to a new, more sensibly-named, account, or am I going to find myself having to manually publicise my account name change and adding contacts to the new account one-by-one?