Also, the idea that a service's success hinges on a user's ability to remember a password is preposterous. Seems as if it could be somewhat of an obstacle when a service is first launched (Dave's early Paypal), but come on. Passwords have become commonplace, and for the most part--especially when money's involved--people don't seem to forget them. They may have when e-commerce was in its absolute infancy, but with the rise of ebay, Paypal, online banking services the password has garnered undeniable legitimacy among the majority of people. I have no data to back this up, but this isn't too outrageous a claim. Right?
Maybe I'm looking at this from the wrong angle.