Facebook – How to View Links at the Bottom of Your Feed

Try ArchivedBook

Archivedbook is a great way to review your Facebook profile's history!

• View all the old wall messages from your Facebook friends.
• View all your old status updates.
• Check how many likes and comments got posted on your profile since the last 30 days.
• ...and you can also view the same data about your friends!

Contests/competitions/sweepstakes/etc

must not use Facebook features or functionality as a promotion’s registration or entry mechanism. For example, the act of liking a Page or checking in to a Place cannot automatically register or enter a promotion participant

and

must not condition registration or entry upon the user taking any action using any Facebook features or functionality other than liking a Page, checking in to a Place, or connecting to your app. For example, you must not condition registration or entry upon the user liking a Wall post, or commenting or uploading a photo on a Wall

and

must not use Facebook features or functionality, such as the Like button, as a voting mechanism for a promotion

See Facebook's Promotion Guidlines for the rest of rules and regulations.