If your Facebook friend numbers are dropping, it could be because you're being unfriended,reported Mirror.
A new app, ingeniously called Who Deleted Me on Facebook will allow you to see who's been casting you out of their digital friendship circle.
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The app is available for both iPhone and Android handsets, as well Chrome browsers through a plugin. It connects to your Facebook account and keeps track of friend numbers.
Along the top of the app are tabs labelled New, Deleted You, You Deleted, Deactivated and Current.
Sadly, the app will only be able to tell you which friends have deleted you since the app was installed - it can't go back in time and track your lost friends.
The app is the brainchild of Exeter-based developer Anthony Kuske and is available for free.
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Facebook recently allowed users to change their profile pictures to celebrate marriage equality, but the show of solidarity could also have been an experiment by the omniscient social network.