Facebook Auto Share

I was wondering if any plugin exists that will allow any visitor to my wordpress site to Facebook Connect with mine and auto share any new posts I publish on my website to their facebook wall?

In essence, rather than expect my visitors to manually share every new post, they can subscribe to my site to have the new posts auto publish on their walls.

Here’s an example of what I’m talking about:

https://farmvillelatest.com/auto-publishing.php