The following are the top Ten Facebook hacks that can be rally fun! But sadly most of them are not working now but still you can check for your self.
1. How to Remove Annoying Facebook Advertisement
Get rid of some of the Facebook advertising and sponsored by sections with this tool.
Get it Here (http://userscripts.org/scripts/show/27121)
2. How to see Real Profiles from Public Pages
This script redirects to real profiles from the Facebook people pages (public profiles). There is a risk of an infinite redirect loop if not logged in, so be logged in.
Get it Here (http://userscripts.org/scripts/show/27011)
3. How to Undo Facebook Changes
If you hate some or all of the new Facebook changes, undo them with these scripts and use what you liked previously.
Get it Here (http://userscripts.org/scripts/show/8482)
4. How to View All the Photos from a Person
You can search for pictures of a Facebook member who has tight privacy settings and view all his/ her pictures without his/ her consent.
Get it Here (http://userscripts.org/scripts/show/11218)
5. How to Find More Friends at Facebook
Suppose some of your friends have newly joined Facebook and you didn’t even knew. Use this script and it will help you go through your friends’ friends list and find them out.
Get it Here (http://www.facebook.com/applications/More_Friends/2419601767)