How to create a web page that people can become users and link Facebook to it?

[Adrian]

Looking to create a web page where a user registers a unqiue characteristic applicable to them and links this to their Facebook/twitter. Then another user can search this unique characteristic in the user database. What is the best way to do this and how hard is it to do?

[Jake]

Facebook Getting Started guides are designed to provide website owners with all of the tools necessary to begin integrating their website with Facebook. The easiest way to get started on the Facebook Platform is with social plugins. Social plugins are embeddable social features, like the Like button, that require only one line of HTML code. Deeper integration with Facebook is available with single sign-on, which enables you to remove the registration process from your site and allows the user to log in to your site using their Facebook account.Go to developers.facebook.com/docs/guides/web/ will help you.