For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Dropbox - Online Sync and File Sharing
Klio - Digital art on your wall. Art evolving.
Google Drive - Access and sync your files anywhere
Aura Frame - A smart picture frame for your family
Mega - Secure File Storage and collaboration
Idea Paint - Create a usable, interactive space on any flat surface