It is the greatest software ever created for clueless lusers who call the Help Desk and claim something doesn't exist. Instead of arguing whether there is a folder called "Program Files" in the Windows Explorer that doesn't exist, you can show them.
Sometimes they are required to add software to *all* users and this prevents them from having to go from desk to deak all over the building (plus our remote locations). Yes, it can also be used to demonstrate where to find or how to use a program the user thinks is not available. It also allows the user to demonstrate how some software is screwed up.