You can have a MeBook. Just sign up to Facebook and don't invite any friends. Only you, the NSA and GCHQ will be able to see your stuff.
I find it useful after moving out of the country, I have mates I grew up with in Canada and Australia, uni mates in Myanmar, Netherlands, Poland, New Zealand, Switzerland, Bali, all over England, Scotland and Wales. Mates in Abu Dhabi and Qatar - can we pop over in the weekend? Mates in the army in any given country, it was especially useful when these army mates were in Afghan and Iraq to keep their morale up being in regular contact with the lads at home and sharing old jokes and family stories.
It's good to keep in touch, share photos and stories without ringing up a huge phone bill or waiting a week for a letter and photos to be delivered.