When you browse on Facebook, this script checks if your friends still have you in their friend list.
If they removed you from their list, you will have a message on the news container asking if you want to remove them.
This script won't work on Opera < 10.50 because of the persistent storage which is only available in Opera >= 10.50.
There's an auto-updater in this script, checking randomly if updates are available.
Some of the most important features are:
It checks every links in page for active/deaktive files.
Just now for Rapidshare...
Not: If you get an bug like this(you will ;)), use this(without php)...