I would be very interested in any register that supported at least SMS for multi-factor authentcation, hell I wouldn't even mind having a real token.
The Apache Software Foundation has had some issues in the past with guys trying to hijack apcahe.org -- same thing, password resets on our registors site, etc, but luckly we noticed within a minute, and were able to talk to a human being on the phone quickly.
But I still really really want multifactor authentication for registers :|