Enlarge / "Say... that's a nice e-mail you're writing." (credit: HP) I have a dirty secret: I am an inveterate reader of other people's screens. It's a compulsion. I've tried to quit. But I can't. They're invariably more fascinating than my own, so if I'm sitting next to you on the plane I'll be checking out your e-mails, reading your presentations, and tutting at your use of Comic Sans in your documents.