I have been meaning to write about this for a long time, but considering that the size of my friends list in Facebook has exceeded the magical number of four, now is as good a time as any other: this may just be a generational thing, but every time I see a Facebook/Orkut page with the pokes, scraps and assorted other crap, my fingers start twitching involuntarily, trying to reach for the nearest neck to choke. The exposure of the messages in one's scrapbook/wall/whatever to everybody in the friends list is, to me, the equivalent of making the password to your email account public. Even if the messages are in the nature of 'Hi!!!! Great to get in touch with you!!! lol!!' (I'm not even going to comment on the language or the presence of the extra exclamation marks), I still consider such exposure a violation of my privacy.
P.S. And dude, there's a word for using $HOT_HOLLYWOOD_HUNK's picture as your avatar or whatever the fsck it is called: loser.