I've got one like that. I call it The Same One™. (© 2001. Anna Key. All rights reserved.)I recently devised a unique username that could be used for all internet logins.
I cunningly devised it after the name of a puppy I once had, plus some numbers. It works on all internet sites. The owners/managers of The Internet don't appear to know that a lot of people do this, so keep Mum, please.