dave: wtf? how does she have 2000 facebook friends, she doesn't even have any real life friends  mary: i'm going straight home to upload these photos to my facebook
"a place where people who never talk to you in real life add you so that they will have more "virtual" friends
"dave: wtf? how does she have 2000 facebook friends, she doesn't even have any real life friends  mary: i'm going straight home to upload these photos to my facebook" What is the definition of "facebook"?