[wmf]

If the browser can remember a BrowserID token, it could also remember an OpenID URL. If the browser can have chrome that triggers a BrowserID login, it could have chrome that triggers an OpenID (3.0) login and does all the redirects behind the scenes. I think with OpenID+OAuth the RP can get an email address.

[Groxx]

Thank God someone else sees it.

There is no reason that your browser can remember a unique username and password for every site you wish, but not a single OpenID url. Or that it can fill in username and passwords across wildly-varying-markup sites, but not in the much-more-frequently-identical OpenID fields. At absolute worst, the OpenID experience can be 100% identical to the Username/Password experience, but no browser I've seen has even done this trivial implementation, much less a more seamless one.