Example of good login/registration integration with social networks and openid?

Question

We are at the early stages of creating a new website, at the point where we need to build the login/registration module.

I want to be looking forward to the future, so I want to allow my users to register and login using all sorts of accounts, such as OpenID, Google, Facebook, Yahoo, etc ...

My users are not all tech savvy, do you have an example of a site that managed to successfully implement a user-friendly "universal" login system?

Thanks

Answer 1

http://stackoverflow.com/

:-)

The only confusing this is the box where you can type in any provider. (Dig that one away under an other heading).