The new box in the top right corner of Facebook. A box that makes it much easier to creep on people/stalk them, due to it constantly updating and showing every little action performed by one of your friends with astounding efficiency.
Bill: I wish there was an easier way for me to creep on Theresa on Facebook.
Bob: Check it out man, they have this new thing called the Creeper Corner that allows you to see every little thing someone does. It's in the top right corner.
Bill: Awesome dude! Now I don't have to hit "refresh" or "most recent" every time I wanna see what she's up to. This new thing does the job for you!