[OpenID] authentication spoofing security challenge

[David Nicol]

The discusssion in
http://digg.com/programming/OpenID_is_growing_in_momentum
includes the following challenge:

> ok.. not to be a complete egomaniac here, really, but my openid is gavinengel.com (points to > Vox id provider, and no I did not have to use any extra code like people keep referring to)
> I'm very interested if anyone can post with my id on any livejournal page. I seriously doubt you > could, I have as much faith in this authentication as I do in the best of them.

Have at it, O vulnerability demonstrators!