Did you know that all websites that you visit can find out which fonts you have installed? It's also possible to find out if you have a range of programs installed. These include Adobe Reader, OpenOffice.org, Google Chrome and Microsoft Silverlight. Perhaps even which sites you have visited lately can be detected!

When you surf around the internet your browser leaves behind a trail of digital footprints. Websites can use these footprints to check your system. BrowserSpy.dk is a service where you can check just what information it's possible to gather from your system, just by visiting a website.