I like that it's easy to use, has many options for sharing files with other users of prontoshare (which are all free), as well an option where you can send documents directly from your computer via email! It helps keep track if any changes have been made in shared folders by others without having them open up their own copy or access through another application/service such us Dropbox etc., so they don't need two different programs installed at once which could be confusing when using bothβ¦