Facebook aquaintance 

A Facebook friend that you do not know, and only added them because of mutual friends. Usually done to beef up one's profile.

DAVID: "Sean Westford" hhmm, 146 friends in common, I'll add him with a friend request. SEAN: *IGNORE* David:*Sends Message* "Dude did you ignore my friend request" Sean: I don't want a Facebook Friend, not a Facebook aquaintance

Facebook aquaintance by Add me bitch May 4, 2010

Facebook acquaintance 

Someone with whom you converse on a semi-regular basis via Facebook, but almost never in person. Should you legitimately meet said acquaintance face-to-face, neither one of you will act as if you know or have ever talked to the other.

-Hey Gil, are you ever gonna get the cahones to ask Katie out?

-Nah, I don't know how to approach her and talk to her for real. We're only Facebook acquaintances.

Facebook acquaintance by ct110 June 19, 2010

Facebookquaintance

Facebookquaintance: (noun-facebook+acquaintance) Someone you've never actually talked to but interact with on Facebook.

"I really wanna ask him out, but we're only Facebookquaintances."

Facebookquaintance by nabootique69 August 22, 2011