I've noticed evidence of this behaviour at work: little scrumpled-up tissues on the floor by the bathroom door. I mentioned this to one of my colleagues and he explained his theory, (see above). I was a sceptic but having noticed that not everybody washes their hands after using "the facilities" I must say that I'm a reluctant convert to tissue use.

There is, however, one small flaw in the case for the use of paper towels: Recently, I saw a documentary on the TV on the subject of bathroom hygiene, (mental note to self: Must get cable.). The upshot was that the toilet seat is often one of the cleanest places in a bathroom. The door handle has one of the highest levels of bacteria, along with the little handle used to crank the paper towels.