Best way to interact with facebook from a Rails Application

What I want to do is aut开发者_开发问答omatically post to facebook when a user post something on his profile (inside my app), I want to remember the user facebook credential to post automatically without asking for his credentials again.

Tumblr has already implement this functionality and I want to emulate it.

What is the best way to implement this functionality whitin a rails app?

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Have you looked at http://facebooker.rubyforge.org/?