Digital Janitor is a program that helps you sorting your folders. Imagine downloading a lot of documents, pictures and photos every day, in the end your "Downloads" folder will be full of files that you will have to cut/paste by yourself into their proper directory. Digital Janitor sorts the folder depending on where the user wants a certain filetype to go, freeing your time.
Also, you might have a lot of MP3 files, unsorted in one single folder. Digital Janitor 3 can now sort all your MP3’s by Artist and Album, so you don’t have to search through tons of MP3’s to find your song.