What Facebook really needs is Bastard Tetris. That will teach you to procrastinate. Maybe you think you're good at Tetris. Maybe you think it won't hurt anything if you just play a flash game for five minutes. Well, you're wrong. If you're going to procrastinate, you may as well punish yourself simultaneously, rather than later when you realize you have wasted all your time.
You'll start playing Bastard Tetris, and for a bit, things will go just fine. Oh sure, it threw you the worst starting piece, but that's no big deal. This isn't that hard, you'll say to yourself. I'm even doing well, I've knocked out five lines already! And that is when Bastard Tetris will give you twenty S-pieces in a row, and then squares. Don't be ridiculous. Bastard Tetris isn't your friend.
And you will love it, because you deserve every time you get the L-piece that faces the wrong way from what you needed, because you are supposed to be working right now.