By clicking a 'friend'
you can get a list of their 'friends'
which is a great way of finding people from years ago,
and as so many people are now on fbk it works!

There are over 200,000 people on one of its Ubuntu groups!

You have to be a bit discreet about what teens are up to on it,
its a good way to keep an eye on them if you dont overreact..

Facebook is very addictive if you have it set to [Most Recent]
then you see what everybody in your 'friends' is typing,
less busy is to set it to [top news]
though even that can be ignored if you just check the 3 icons top left
[Friends] [Messages] and [Notification]