We’ve posted before on using Networked Blogs to push content automatically from your WordPress site to a Facebook Page. Another option that I have found to be a bit easier to use is a plugin called “WP Email-to-Facebook.”
You can find the plugin in the WordPress plugin directory, just search “WP Email-to-Facebook.”
Install the plugin and activate it. Once you do, the plugin will be found in the Settings menu area. Follow the setup instructions within the plugin. You have the option of choosing your preferred URL shortner and linking it up with an API ID and API Key if you would like.
Setup takes about 5 minutes and once it’s complete, new headlines and links will automatically post to your Facebook page.