I have seen a lot of wall updates regarding this. Some says click on the link to find out if someone unfriend you or delete you on their friends list. Frankly my dear, I don’t give a damn.
I would rather have zer0 friends on facebook but lots of them in real life.
But really, spend time with your friends…go out-don’t use the poke.
Call them on the phone. visit..hang out.. life is short.