Vittorio, I sure understand that couple of issues you clarified, I maybe have not written it the right way.

In Cardspace when you login, they are checking the card you have on your computer while in openID they are connecting to your identity provider. Of course in cardspaces, the majority of cards will be provided by a indentity provider too, but the card will still be in your hands. (Something  I believe is maybe more secure, but a lot of the security failures are caused by the user (like passwords under the keyboard, or post-its on the monitor, anyway this might be another topic we could discuss).

As for the second point, what I meant it was that it was better for my situation. Maybe it isn't... ONe thing I'd like to emphasize is the "for now"  since I believe CardSpace is not ready yet in my perspective. I know support for linux and mac are being done and  for mobile too, but they're not 1.0 yet. I believe it is the better solution for this weblog for example, but I'm sorry if I put words in your mouth that aren't correct.

And by learning the elaborate scenarios is where you realize the potential within CardSpace. So I did enjoy that session!