Free Online Backup, File and Folder Sync, Share & Storage for Windows, Mac, and Linux - SpiderOak.com
This looks like an interesting alternative to dropbox.
Free Online Backup, File and Folder Sync, Share & Storage for Windows, Mac, and Linux - SpiderOak.com:
"SpiderOak provides an easy, secure and consolidated free online backup, sync, sharing, access & storage solution for Windows, Mac OS X, and Linux (Ubuntu, Debian & Fedora)
* Access all your data in one de-duplicated location
* Configurable multi-platform synchronization
* Preserve all historical versions & deleted files
* Share folders instantly in web ShareRooms w / RSS
* Retrieve files from any internet-connected device
* Comprehensive 'zero-knowledge' data encryption
* 2 GBs Free / $10 per 100 GBs / Unlimited devices"