(Source)
Ubuntu One is free (upgrades are available for purchase) and available for use on Linux, Windows, Mac, Android, and iOS.
I will be putting the Linux and Windows versions of this service through an examination that will show how its use may help, or hinder a forensic investigation.
Please check back for frequent updates, and as always, feel free to contact me about this project.
Champlain College
Champlain College Forensics
Thank you!