Does Facebook edify?
Lawful yes, expedient ...probably not. I know there may be some good there but few can use these tools with moderation and selflessness. Myspace is about just that *MY* space, it ain't about you or your space. Facebook is a way for anyone with a computer and an ego to feel important. I know,I know *its a great way to get connected and to reunite with old friends* but these social networks can also be addictive and promote some serious selfishness.
I also think these networks break down walls of discretion, I know I dont want my husband connecting with girlfriends from his past and vice versa. I also know that if I connect with Sue she may be friends with that cute guy from Math class and who isnt going to check out ol' Toms profile? Do we really want to revisit the past? God doesnt want husbands and wives looking up old flames....but I know it happens.
1 Cor 10:23 All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not.