Last week, Facebook reminded users that when they ignore friend requests the requesting party is not notified, but a new Greasemonkey script lets users know if someone they’re already friends with removes them – another case in which Facebook doesn’t provide a notification.
The updated script, called Facebook Friends Checker, keeps track of when you get removed from someone else’s friend list by regularly checking to see exactly who is defriending you. It’s one of the easier ways we’ve seen to track Facebook defriending, and could also be used for professional purposes to know who’s axed you from their list.
Once someone is removed from your friend list, you are removed from their friend list as well, but you can add them again simply by resending the request. Here’s the full video from Facebook: