I've recently found the joys using Dropbox.com. Their client software is available on Windows, Mac, and Linux. There are pre-compiled installers for Fedora, Debian & Ubuntu, otherwise the source is available to be compiled for your distro of choice. Once installed you can easily add files to an online storage space that starts from 2 GB in size.
As with other freemium business models, this level of service is provided for free in the hope that some users will opt to pay for additional storage space. It's a great service.