These actions take place:
Your list of Facebook friends is added to your Mac’s Contacts app and kept in sync with Facebook. Facebook events are added to your Calendar app. You’ll be able to post status updates to Facebook from any Mac app that supports this capability. These include Safari, the Notifications Center, Photos, and any app that includes the Share button or icon. Apps on your Mac can access your Facebook account with your permission.
Contacts and Facebook
When you enable Facebook integration, your Facebook friends are automatically added to your Mac’s Contacts app. If you want to include all of your Facebook friends in the Contacts app, you don’t need to do anything. Facebook will update Contacts with a Facebook group that includes all of your Facebook friends. If you would rather not include your Facebook friends in the Contacts app, you can turn off the Facebook friends syncing option and remove the newly created Facebook group from the Contacts app. There are two ways to control Facebook and Contacts integration: from within the Internet Accounts preference pane and from the Contacts app’s preferences.
Internet Accounts Method
Contacts Preference Pane Method
Posting to Facebook
The Facebook integration feature allows you to post from any app or service that includes the Share button. You can also post from the Notifications Center. For example, Safari has a Share button located to the right of the URL/search bar. It looks like a rectangle with an arrow emerging from its center. Your message and a link to the webpage is sent to your Facebook page.
