count me in too, alt-tab.
The problem is, sometimes its too late to alt-tab. Someone is already next to you. Then you start sweating and thinking, is it too late to alt-tab now? Am I being more suspicious by changing windows than just leaving the web-page up. Or you do alt-tab and wonder if it was too late, did the person just see you switch and know you are covering up your browsing.
Then the worst is what someone else mentioned, you alt-tab to a window that doesn't fully cover the IE window, but leaves a flashing ad banner visible. So you see out of the corner of your eye this blatantly obvious banner flashing wildly while a co-worker is talking to you. You know its completely obvious and drawing their attention to it, but there is absolutely nothing you can do about it at that point. Then the dreaded moment comes and you see their eyes look at your screen to see what that annoying flashing is. Dang ad banners.
PS. I had to alt-tab once while typing this message.
