An e-mail address is a nice identification tool, like your SSN or your telephone number or home address, or your name and birthdate, but they all are cumbersome if they change. And there certainly is no standard way of registering and changing your data at websites, which makes it even more cumbersome.
It's still a long time to a universally adapted and accepted ID-mechanism. One of the ways would be to have every PC equipped with a rfid-reader, and every person on earth having an rfid-chip implanted. But you wouldn't want that either, probably.
Is there a way of overcoming protracted IDing to each one individually? Sounds like it could be sort of a responsible "spam". Notifying each on on the list (about 40 or 50 favorites--including my account at CNET) makes it formidable. I suppose I could setup new accounts at the new address, but that would be doing precisely what I am trying to avoid. Moreover, setting up a parallel set would be, to my sense of propriety, hoggish and irresponsible.