Mac OS X automatically creates ".DS_Store" files in all folders.
While these are hidden in Mac OS X, they will display if a folder is shared with a Windows or other OS user (for example, as a zip file).
This can look unprofessional when distributing important files, and can be confusing to the receiver.
DS Destroyer will remove .DS_Store files from a given folder (and all subfolders) so that it can be safely shared.