OpenID requires the user to remember what sites they have accounts on that provide OpenID authentication, and requires them to remember their authentication inf

OpenID requires the user to remember what sites they have accounts on that provide OpenID authentication, and requires them to remember their authentication information for those sites every time they want to log into an OpenID-using site. In its current form, BrowserID requires the user to do the email-verification dance once for each email address they want to authenticate as, and from then on they can just pick it from a list instead of doing the dance yet again. In its ideal form, once the BrowserID API is implemented directly in browsers and webmail systems (instead of the shim at browserid.org), the user doesn't need to remember anything: they click "sign in" on the web-page, the browser brings up its standard 'pick an email address to authenticate as' dialog (populated from all the webmail sites the user has logged into), the user selects one from the list, and off they go.