Glide offers 30GB of online storage space [glidesociety.com]
(with access for up to six users) for free. It's the best such offer I've seen from this service. Glide is compatible with Windows, Mac, Linux, and several mobile platforms. For more information on this mobile desktop service,
Link to signup [glidesociety.com]
ALL ACCOUNTS INCLUDE:
Uncompromised secure online file storage - Store thousands of files and access them securely from anywhere in the world.
Cross-platform file compatibility - Automatic file and application compatibility across devices and operating systems.
Productivity & Collaboration Apps - Intuitive and easy to use applications that help you to get the job done.
Glide Sync App - Automatically synchronize your home and work files with ease.
Mobile File Access - Access your files on virtually any mobile phone with a browser.