Have you ever noticed that when you tell VS to "Clean" it doesn't really clean?  I don't know what it actually does but after a clean I still see bin and obj folders under my project.  When I want to share code with people I usually want to get rid of those folders as well as old test results created by unit tests.  I got fed up with having to manually remove these things so I wrote this nifty little tool that will recursively clean a directory tree.  Give it a try