I just noticed that the login portion of my StackOverflow profile is different than it was back when I joined the site.
It now lists some email addresses, and indicates I can sign in with any Google, Facebook, Yahoo or Stack Exchange account that lists the specified email addresses. Then it also lists OpenIDs that can be used to log into the site.
This is an improvement, since relatively new users can sign in with any of the popular services without having to remember which one they originally used, and you are no longer limited to just two OpenIDs being associated with your account.
However, it seems like there is no longer any way to remove any Logins from the lists. This is a regression. As mentioned in a comment on Remove Alternate OpenID, this is a security issue. If an OpenID Provider goes rogue, or it goes under and an evil entity buys the domain, I should be able to remove it from my account.
Am I missing something, or does removal of Logins need to be re-implemented?