Am I the only one who thinks that launching my e-mail client, getting mail, probably scratching around in the Spam folder etc sounds like a fairly hellish user experience?
Persona is awesome for that, and for the "no central authority" thing. To bad it lost momentum and seems an awesome relict inside of Mozilla.
I do kind of hope they use heartbleed to make a second push with it fast, while people are paying attention to the problems with current models.