Verb form - frobagging:
The process of throwing away "friends".
"People who would rather text on their cell phones and update their Facebook status every 10 minutes, will probably end up being serious frobags."
"There isn't a single intelligible thing that comes out of her mouth, why do I hang out with this frobag?"
"If I hear one more thing about how this guy is hot or that the world is going to end because you need this iPhuck app, I'm going to start frobagging."