Okay, I don't know if you will admit to watching Mythbusters, but I just saw an episode that answered some questions I was really interested in. As usual, it's fun to see how the testing was done.
Public restroom hand dryers vs paper towels.
Do those air dryers blow germs onto your hands? Do they blow germs all over the rest room?
Conclusion: Yes to both. There were more germs on the hands and area around where the air dryer was used (sides of the dryer, floor, walls).
Which bathroom stall is used the most often (men's room), and which has the fewest germs?
The least used stall out of four was the first one, and second least used was the one at the far end. The most used was the second one. They did exit interviews, and the men who agreed to be filmed said they liked the second stall and the fourth one because it was a little more private.
The germiest followed with the frequency of use.
I know, it's a tacky subject, but now we know.