Simple, no account required, 100 MB free, can password protect, creates RSS feed.
Requires account, 1 GB free but only 5 drops per month.
Simple, no account required, 250 MB free, can password protect, expires in 1 week.
Uses an application to sync files.
Xdrive® Storage
* Back up all of your files -- your documents, music, photos and more -- automatically
* Conveniently access all your files from anywhere.
* Easily share permissible files with friends and family.
* Get 5GB of free online storage!