I´m testing LiveDrive (paid) service for it´s 14-day free trial full function period. LiveDrive has 2 functions: As a Backup in the cloud (all or some folders you want) and more interesting for me "LiveDrive Briefcase".
LiveDrive Briefcase creates an "L:" virtual drive at your PC (or MAC) and automatically syncs all the files or folders you have created inside your local "L" drive to the cloud.
But the problem (as on most cloud file sharing services) is that you can´t map other local folder than inside "L" to sync (and get by the way... get backed-up).
I have a Little office and some folders shared within 8 PC, so I won´t move files or folders to another place inside my PC because probably this will interrupt my local sharing network at office. But maybe moving folders inside "L" drive was an approach. So I think rather than copy my selected shared folders to the L drive, the solution will be move these folders to the L drive. But I can´t do this. The L (virtal) drive accepts only to copy inside but not to move inside... so if I want my files still resident at it's original location I need to think another solution. (Because copied files in "L" location will not be visible at my local network and/or maybe not be shareable and maybe cause problems with duplicate files, etc Note: "L" drive is a virtual drive so copy files inside it not eats space of your hard drive.
Then I think: yes... L drive accepts only created or copied files inside it, so I need a solution to automatically copy files (back and forth) between L drive and my selected folders to share these folders not only locally but on my cloud LiveDrive service (Briefcase).
I search and found an oldy little free software that can automatically sync one or many folders or files to another drive or folder. Either in one direction or other or fully back and forth. This tiny an usefull software is DSynchronize (google it to find and download).
So my final solution was:
1) Install LiveDrive Briefcase (the paid cloud storage service best suit my needs and best priced) at my "server" PC where my locally shared folders of my Little office network was located. This automatically created the "L" empty drive.
2) Then install the little DSynchronize software and configured it to autostart at startup (or you can setup it as a service if you want) and configure it to automatically sync my selected folders (copy back and forth between) to my "L" drive... AND THAT'S IT !!
RESULT: I´M VERY HAPPY !! LiveDrive Briefcase and DSynchronize works very well together.
DSynchronyse maintains evenly, silent, fully automated ann instantly actualized copy of all my selected local folders to my "L" LiveDrive Briefcase drive, so then, all "L" content (a exactly up-to-date copy) is automatically sync to my LiveDrive cloud storage every moment, so I can use it anywhere simply loging in my Livedrive Account anywhere in any internet connected device.
Theremore, I can share a folder or many folders or a single file with my external partners or costumers by only sharing it by their email accounts (a convenient & simple feature of LiveDrive Briefcase) and then LiveDrive automatically emails to the recipient a link and user & password to get Access only to that folders or files. (my customer can see, download the folder or files I shared to him, but not edit or delete at my Briefcase, nor upload) so it´s my perfect solution.
And... BTW ... Briefcase is a convenient 2Tb (yes!!...2048 Gb) cloud storage at only US$25/month.
I hope this solution may work for you, and obviusly DSynchronize software can sync Dropbox folders or other free cloud service "dedicated" folder with another(s) local folders if you don´t want to copy or manually move your local content to it. So you can get more usability from any free or cheap cloud storage service thanks to DSynchronize free software.