'Necrophiliac bestiality, of course! How else am I to screw my food while I eat it?'
If these people mean something to you, then you should be able to find the time to have adequate direct person to person communication with them instead of broadcasting to them and your closest 600 best buds. If they don't— then why care?
I certainly believe that you find Facebook useful, but don't overstate it. People have had friendships long before there was a friend button.