Delete all Facebook Friends easy way (update 2013)

for delete multiple friends at once, we will be first need to Firefox browser (you can download it from here Firefox If you use another browser) in the second step we will need to add greasemonkey for Firefox, after Install it and restart the browser download this script Grease Monkey Plugin which will help us to delete all friends by clicking on the install the top of the far right.

After the installation go to your facebook account and click on friends and you will notice that every friend  will be shown in front of a small box you can tag at all the friends who want to delete from your account then click on the Delete Slected at the top as shown in the picture above, if you want to delete all friends without choice you can click on the delete All.