"Apple has recently filed a patent for translucent windows that automatically adjust the opacity as information is updated (or not updated): "overlaid, Information-bearing windows whose contents remain unchanged for a predetermined period of time become translucent. The translucency can be graduated so that, over time, if the window's contents remain unchanged, the window becomes more translucent. In addition to visual translucency, windows according to the present invention also have a manipulative translucent quality. Upon reaching a certain level of visual translucency, user input in the region of the window is interpreted as an operation on the underlying objects rather than the contents of the overlaying window."
Why do I smell conspiracy? If this patent becomes enforceable, it will not only throw a wrench into Microsoft's development of Longhorn, but it will also potentially shut down several popular Windows customization tools like Windowblinds. I think Apple has gone overboard this time. As I recall, this type of windowing effect has been in existence even before OSX.