An interesting idea over at Signal vs. Noise
Changing your phone number vs. changing your credit card
Now that everyone in the US can change their cell/land phone carriers and keep their number, it’s time the credit card industry follows suit.
Even when you stay in the same credit card company, but you change card types, your card number changes. So, if you go from a Citibank cash rebate card to a Citibank American Airlines rewards card your card number changes. This didn’t used to be that big of a deal, but now with so many recurring monthly services (cell phone, web apps, cable, health club, satellite radio, tivo, etc…) being automatically billed to your credit card a card number change becomes a Big Deal.