I've got more than 1 facebook account. I'm much more diligent about checking my personal one, and it is a reliable way to get a hold of me. My other facebook account I try really hard to keep up with, but most of the time I forget it's there, lol.
I've had my facebook account for 6 or 7 years now I just check it every day out of habit - its become part of my routine. I have cut down on my "friends" though - I used to have over 1000 and I was so proud of myself when I got it under 200.
I have two. One I check everyday to see what my friends and family have been up to and to play the games. The other I use to try out new things and to test to see if they are safe to have on my regular one.
I have several. I used to not bother with them, but I recently discovered that my girl likes to play Words With Friends on there, so I've been logging in every day to play her. I've lost every single game.
Yes, sadly since I am so far from home and many of my friends don't keep in touch well, it's the best way to see whats going on. I check it a few times a day the same way I check my email and other sites.