I'm trying to use as much OpenID as I can. But I don't have to trust my openid provider (myopenid) to stay forever. I have my own domain, and I have amazon S3 account. so I just cnamed id.mydomain.com to S3 and uploaded a simple OpenID delegation file to S3 which is now accessible at id.mydomain.com/vitaly which is the url I use to signup for services. If I ever decide to leave myopenid (and I started thinking about switching to google, since I'm always logged into gmail) I can just switch the text file and it will just work.