Delete All of your Facebook Massages in one click

After you add it to chrome .(A new button to delete all messages)

This is very cool trick for you and i think you will enjoy this very much.Normally facebook haven't give you any tools to delete your all facebook massages at ones.But using this  tool you can delete your all facebook massages in one click.
This is a Google chrome extension.This is free and anyone can add it easily.Just go here and   Click "add to chrome Button.After adding it go to http://www.facebook.com/messages/  and see the magic !. :D