Protecting your Freecell statistics using Sandboxie may be a good idea when a less qualified player comes along, but you will probably want to play most of your games outside the sandbox. On the other hand, you may want to run your Web browser inside the sandbox most of the time. This way any incoming, unsolicited software (spyware, malware and the like) that you download, is trapped in the sandbox. Changes made to your list of Favorites or Bookmarks, hijacking of your preferred start page, new and unwanted icons on your desktop -- all these, and more, are trapped in and bound to the sandbox.