Available only for Chrome based browsers.
New update for Firefox will be in progress..
REMOVE INVALID FRIENDS
As you know, when a friend is removed from Facebook, it still in your friend lists. it may cause some issues while using MWAddon tools.
MWAddon Client has added a new feature to easily find and remove all invalid friends.
When you load your friends page, a new button will appear “Search Invalid Friends”.
Clicking this button will start an automatic search for all your invalid friends, if MWAddon find invalid friends they will appear with a faster “Remove” button.
Once the process of searching has finished, the Button “Search Invalid Friends” will be changed to “Remove All Invalid”.
Clicking this button will start an automatic process to remove all invalid friends.