Integrating OpenID into a website's registration process

Question

I want to integrate the same registration process that Stack Overflow has into my website. Does anyone know if this is possible and any ways I can go about doing this?

I am using ASP.NET MVC for my site implementation. It would be awesome if someone could point me in the right direction with some examples etc.

Answer 1

You can find out how to use OpenID here.

Answer 2

There's also DotNetOpenAuth.

Edit:

Andrew Arnott also pointed out in the comments that there is a pretty awesome OpenID selector control available. The Stack Overflow question it relates to is here.

Thanks Andrew!