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facebook friend checker

Facebook, by default, doesn't allow you to see when someone removes you from their friends list, so a script was needed. There’s now a Greasemonkey add-on (available here) called Facebook Friends Checker that will check your network at scheduled intervals to see if anyone has removed you from their friends list and alert you when it happens.

When the script detects that someone you used to be friends with is no longer one of your friends, a message will appear informing you about who it was and giving a link to their profile page.

The script checks by default once per hour when on Facebook, but this time can be increased through "Tools > Greasemonkey > User script commands... > Set time interval to check for removed friends...".


How Facebook Friends Checker works

Any time a page is loaded on Facebook, the script will run and it will follow the following basic algorithm;

* If the script has checked your friends in the past <<insert number here>> hours, do nothing.
* Otherwise, load a page on Facebook with a list of all of your friends.
* Go through each of these friends and add them to a list.
* Compare this list with the list saved the last time the script checked your friends.
* If someone was on the list before who isn't now, post the box informing the user.
* Save the new list of friends over the old one.
* Save the current time as the last checked time.

It is kind of like Quitter for Twitter.

[via mashable]
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