Another thing I love about this discussion is the intimation ("big brother") that in order to get a picture of my screen, you have to be the NSA. And not, you know, some jackass with a camera.
Sure, sure, it could be both. It could be my girlfriend looking over my shoulder too. But of course, I don't use an stupidly easy password and I don't let my girlfriend see me typing it (2-finger typing style, of course). I mean who does that, right? </sarcasm> :)
I just find it interesting to observe the discrepancies between perception of security and actual math-backed security.