You can clone with
Logging in to flask.pocoo.org with http://openid.aol.com/username fails consistently for me. After being asked to share my nickname by AOL I just never get redirected back to Flask site.
Safari Version 5.0.3 (6533.19.4)
MacOS X 10.6.5
Known issue with Flask-OpenID. Have to fix this.
I have been unable to reproduce this with the latest release, so I think this can be closed.