Some people decided to make a site tracker that displays the most recent updates made to Wikipedia. It locates the "anonymous" user and displays the edited topic, section, and area from where they are writing from.
Now that's creepy. No wonder there are paranoid people out there. I seriously don't blame them.
And if you thought that was creepy, there's more. There's one for TwitterVision (http://twittervision.com/maps/show_3d), and actually, my personal favourite , FLICKRvision (http://flickrvision.com/)
Okay. Now you know about, you can't unknow it. Happy stalking!!!