Perfect Facebook Wall is a client App Part. You can use it to display your Facebook posts, comments, likes, guest entries from your personal walls, groups or facebook apps that you want to showcase on your SharePoint pages. There are no special credentials required to use this app part. Here is how you can quickly setup the app.
You can see more details and screenshots at http://codeknit.com/SharePoint/FacebookWall
Install the app and add to any Wiki or Web Part page.
Go to module Edit settings and provide Facebook Wall ID/Group ID/App ID.
Provide common public properties for the App Part such as how many entries to display, whether to show comments, guest entries etc and what time format to display for the posts.
Save the Client Part settings and your wall posts will be ready to display.