add OpenID if you like too.
Persona allows you to sign in to sites using an email address you choose. So, instead of having to manage multiple usernames and passwords across your favorite sites and devices, you’ll have more time to do the important stuff.
Persona lets you get started with just your email address; you can add your profile data later, when and where you think it’s appropriate.
View idea at: Mozilla Persona for Login
Posted by ThomasOOO