Maybe they need to put up those silhouettes on the clear glass like they do for birds.
What, with all the metrosexual-millenical geeks, that could make for a humorous contest to submit the best photoshopped geek silhouette...:)
This was suggested but Apple refused, citing their desire for a more clean visual. The major problem with what Apple did (other than create a injury hazard) was that they violated California law by not placing visible indication on glass dividers. Apple should be in a class-action law suit any day now...