Facebook Connect Integration with a site using ASP.NET Membership Provider

Question

Are there any best practices or examples of how to best integrate Facebook connect with an existing ASP.NET Application using the Membership provider (or something similar). I

Answer 1

https://rpxnow.com/ has changed its name to "Janrain" and is commercialized. It would be nice to know the technology behind it in order to create a solution of your own.

Does anyone know an open source, free solution like "Janrain"? Or a good tutorial, suitable for ASP.NET MVC 2?