First of all, you should know that the script works only with Firefox 3.5+ If you prefer stay with Internet Explorer, Safari, Google Chrome or Opera, leave that way.
If you are on Firefox, just install Greasemonkey if you have not already did it.
Once Firefox started, just install Greasemonkey.
Greasemonkey is a Firefox addon that lets you use scripts operating on specific sites.
They can improve the use of some websites, like Facebook, Google, Youtube, and many others.
Here Facebook will be improved, because the script will add the ability to know who unfriended you!
Once installed, restart Firefox.
Now that Greasemonkey is installed, you finally have to install Unfriend Finder
Unfriend Finder is hosted on a special website, userscripts.org.
On this website all scripts dedicated to Greasemonkey are stored and accessible.
So you must use this website to install the script. First of all, close any open tab Facebook.
Click on the logo to access the Unfriend Finder page on userscripts.org :
For the more hard users, sources access is free to see how the script works.
In numbers, Unfriend Finder is about 3500 lines of Javascript code, and some thirty hours of work.
On the page, click
If Greasemonkey is properly installed, this window opens :
Click "Install", that's it.
Have no fear, despite the warning message, the script is not dangerous.
If you do not see this window, be sure Greasemonkey is installed:
You should see a brown head monkey icon on the bottom right of Firefox.
If the head is gray, Greasemonkey is installed but disabled. Click on it to reactivate
Finally, you can come back on
Facebook, a welcome message will appear!