Creating a hook into my facebook app from another site

new to facebook dev and I have read the basics to get a site up and running using the canvas setup. Nice and simple, I have also got the integration with users working ok (i.e. the signed_request).

I was wondering how it works with "sending/posting" data from one site that is anonymous (my own external to facebook) to the facebook site.

The flow I'm after is a user is looking at some content my site A (my own external site) and then clicks the "share on facebook" button (or whatever), which sends t开发者_如何学Gohe user (and the data they were looking at) to the site B (my facebook app) to which they authenticate and then (and this is the part I dont get) can see that content on their personalised homepage within site B.

So is there a way to POST some kind of data to the facebook site? Or do I need to do something else here?

Thanks a lot.

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You use the facebook API located here:

http://github.com/facebook/csharp-sdk

The .zip download includes the api that you can compile, as well as a sample project that uses it.

Reference: http://developers.facebook.com/blog/post/395/

EDIT

Here is some more info regarding the facebook graph api. I think you'll find everything you need in here: http://developers.facebook.com/docs/reference/api/