My concern is the security part. How secure is this OpenID? I read some stuff on identityblog on OpenID and I am not sure what to make of it. For submitting a Perl post on a forum I can probably live with the level of security. (Loggon on to the Monastery means submitting your password over http which is also not particular safe).
But OpenID will most likely quickly turn into a silver bullet (IT history is full of examples) and be (over)applied to any authentication/authorization problem. I would like to know more about it before I go gung-ho on OpenID. It does look like an interesting initiative though (at first sight).