I think ultimately the big identity services will basically be how we pay for things on the internet. That's this Pay with Amazon one-click button, where pay wi

I think ultimately the big identity services will basically be how we pay for things on the internet. That's this Pay with Amazon one-click button, where pay with GMail will go, and what Facebook will eventually come to if they ever care about payments. This causes some problems as your accounts become all the more valuable, but why should I ever have to enter my credit card info on the web more than once?