It occurred to me that this facebook thing is just like we were out in an immense open place, all standing and minding our own businesses (gazing at the sun, dancing in circles, listening to music, reading, chatting maybe). There are around so many people we know, so many people we would usually stop by in the street and at least say hi. But facebook is just a large square in which we sit side by side without taking a look at each other, without saying hi. How rude.
And I remember Brat who used to navigate through his messenger contact list and started by buzzing everyone in row with the same odd question: Hello, how are you? Very few replied of course, but those who did were the worthwhile chatting with, I might think.