I'm sitting behind the one-way

I'm sitting behind the one-way glass of a corporate usability lab, watching people off the street navigate through Web sites (I'm posting this using my Palm and Omnisky modem.) There's a funny voyeuristic thrill to sitting in the bleachers of the observation room. As odd as the process is, though, it really works - by the time the fifth user in a row has failed to see your 'help' link, you have a pretty good idea that it's in the wrong place.