I read the Remnant article, and I can say it didn't apply to me or most others here.
All I've seen from priests "against Facebook" is advice for parents of younger children.
Yes, you need to learn to do things the old-fashioned way before you can do the "virtual version" or you have major problems. I'm a big proponent of this.
You need to learn how to play before you can safely play video games. You need to learn how to read (and get plenty of practice) before you should waste ANY time in front of a TV. And it's certainly a bad idea to place a cell phone/computer in the hands of a child until he has become mature enough to handle it (emotionally and spiritually). The Internet is a big place, and there's plenty of danger within.
Until maturity, Facebook should be completely avoided.
But why shouldn't Caminus, myself, or any other mature Catholic sign up for Facebook to keep up with distant family and friends?
Not everyone can connect with their family IRL instead of online. For some of us, visiting everyone you know is impossible. All my family and friends live 1,200 miles away and visiting them is absolutely impossible. I call my immediate family, but I wouldn't have time to call each of my old church buddies, etc. The best I can do is keep up with what they're doing on Facebook.
Joining Facebook doesn't mean you have to play the time-wasting games, etc. I certainly don't. And if you pick your friends wisely, you can learn, keep your mind sharp, stay informed, and even be edified.