I was wondering if it isn´t possible to combine techniques like OpenID and GenPass to create a sort of OpenID login for sites that don´t actually have an OpenID login.

The idea of a proxy server like this would be to automatically create an account for you on a site that it recognizes and so allowing you to login transparently using your OpenID provider. This idea could be implemented by sites like ClaimID who already provide more than just OpenID. I think it would actually be pretty easy and I might give it a try when I get my MacBook back from Apple. On the other hand maybe Simon Willison should give this a try with his OpenID provider idproxy.net.

Obviously this technique would only be a hack as I believe that any small site should provide an OpenID login. On the other hand, as many sites run the same software (Wordpress, Drupal, etc) it would not be diffucult to create a proxy server that can automatically generate accounts the most common systems on the web if necessary.