The library at Georgia Tech provides a map of available computers "on a screen that is visible to students waiting in line." Imagine working at a library that regularly has a line of students waiting for computers! Of course - doesn't it seem as though they are tying up a usable screen to provide this service? Perhaps there's a detail missing. Anyway, I thought it was quite nifty and if you watch it for a bit you can see people logging on and off as the computers change from green to red. Also imagine never again having to say "there are computers upstairs, and a whole classroom in the back!"