Advantages

A secure system : access by password

A clear and redeable interface

Not any complicated manipulatons : once the program settled you work without any difficulty.

Sending files to addressees consists in sending links : the addressee downloads the file on his computer, there is no more sending and reception matter for the voluminous files.

Sending the folders access password to your privilegiates penfriends, you can share your files from a distance.

On travel : no more need taking a computer with you to access to your data, all the computers connected to internet become yours.