I'm not an official distributor and don't get paid by them, but I do use Dropbox and really like it. It behaves like a folder on your desktop, but is available on any computer you use on the internet. It's much easier to use for file transfer than emailing things to yourself.
Here's a link to see what I'm talking about: Dropbox.com
If you sign up, we both get 500MB free space. You get the same deal for anyone you refer to Dropbox.
Along with Evernote, another software package I use in the cloud, this is a pretty nifty bit of cloudware.