When you copy a file or folder to the same location on your local drive in Windows PC, a copy of that file or folder will be created with the – Copy extension added at the end of the file/folder name ...

BitTorrent etiquette dictates that once you've downloaded files, you also seed them to help others' downloads go quickly. If you need to move or rename your download, everything's thrown off. Reader ...

While the launch services in OS X use file name extensions to associate files with various applications, generally users do not need to interact with these extensions and the system keeps them hidden ...