If your not on the Dropbox band wagon yet this is your chance to hope on. This is another up and coming super star of the webapp world. They do one simple thing well. Sharing files across multipul computers. Its free to get started so just check the link below that show some very cool ways other people are using it.
A free Dropbox account allows users to store up to 2GB worth of files and access them from any other Linux, Mac or Windows machine running the Dropbox application. Or, those files can be accessed from any browser.