Facetwatting 

The act of posting something on Twitter and Twitter immediately posting the message on Facebook. So if you follow the person on both, you get both messages.

Man 1: Hey Charlie just posted a funny joke on Twitter.
Man 2: He just posted a really funny one on Facebook.
Man 1: Its the same joke, he's totally facetwatting.

Facetwatting by neuro24 March 8, 2013

Facewasting 

Facewasting is the act of wasting a ridiculous amount of time on FaceBook, sat there staring at the bottom right-hand corner of the screen for a "notification". This type of behavior is often shown by people with little or no social life

Oh God, I need to get some friends and stop spending my time facewasting!

Facewasting by MasterHowl June 13, 2009

facetnating 

To be fixated or astounded by some fine cut jewelry.

Diamonds are facetnating to look at... when in the right lighting.

facetnating by NepentheRay October 30, 2013