Facebookmurder 

1) To commit Facebook murder.
2) (Figurative) To cyberbully.

I'll Facebookmurder you for this! You're going to cry when you see your profile…

Facebookmurder by ak-boing November 16, 2010

Facebook murder 

Facebook murder is to delete someone from your facebook friends list.

Facebook: Delete this person from your friends list? Person: muhahaha yesss facebook murder haha

Facebook murder by Marthaw138 June 22, 2009

Facebook murder 

1) Maliciously posting harmful, humiliating, or incriminating content on a person's Facebook or other social networking site profile, or on any page of Facebook or another social networking site, in an attempt to make that person commit suicide. Often done as a group activity.
2) (Figurative) Any type of cyberbullying.

I looked at the profile of this kid who committed suicide; it was Facebook murder!

Facebook murder by ak-boing November 16, 2010

Facebookmurderous 

1) Inclined to Facebookmurder.
2) Of, similar to, reminiscent of, or pertaining to Facebook murder.

"That guy's Facebookmurderous." "Those posts are Facebookmurderous.

Facebookmurderous by ak-boing November 16, 2010