If you need to have access to the files on your computer when you are away from it, or you want to give someone access to some of the files on your computer, this can be done with file sharing. However, unless it is done correctly, it can leave your computer vulnerable to access by unintended persons or viruses.
You should also be aware that sharing copyrighted files is a violation of U.S. Copyright laws. If you have any questions about whether the materials in the folders on your hard drive are copyrighted, you should determine if they are, who the copyright owner is, and whether you have the copyright holder's permission to share those files prior to turning on file sharing.
