If there's such a thing as Anger Management, I think it's time that we invent something like Facebook Management.
I have been a member of Facebook for more than 2 years already, but it really became popular last year, wherein my friends list easily increased by 5x. Admittedly, I was always online until my love story with Facebook dwindled about last month. For some reason, I lost a bit of interest. Actually, I have been praying for that to happen when I noticed that I have been on Facebook for most of my working hours (as a work at home mother).
The secret? Just stop updating your status unless there's something really important to announce to your friends. Really. It worked wonders for me.
Now my days are productive. That's Facebook Management. :)