Facebook's biggest limiting factor is the word "friend". My co-workers are my co-workers. My family is my family. The dude I met the other day at a networkin

Facebook's biggest limiting factor is the word "friend". My co-workers are my co-workers. My family is my family. The dude I met the other day at a networking event is just a dude I might want to keep in touch with. None of these people are my "friends".