Wikipedia updates via RSS

This makes perfect sense, but I don't think I ever used this feature of Wikipedia. Anyone can subscribe to any entry in the world's most famous Wiki and receive updates when content has changed. Think of the possibilities: subscribe to the page of your favourite band and find out when a new album has been released or when a tour date has been added; subscribe to the page on a topic of interest and see what others are saying about it. This could be useful.