This article on Ole's Blog, found through Digg, is titled "Your Keyboard is Dirtier Than Your Toilet." The article gives you a piece of advice: after using the keyboard, you must thoroughly wash your hands. A Swedish laboratory has tested some keyboards that have been used by people, and the results show that the keyboards are very dirty. The number of bacteria on one keyboard was 265 times more than on a toilet seat. Similar tests have been conducted before, and the results were consistent.