Sharing large files across the Internet used to be quite a difficult task, but now the tools to move anything from a few metabytes to a couple of gigabytes are accessable to all…either cheaply or free.
At yousendit.com, with a free account you can send files of up to 50megabytes, and it’s much the same as sending an email.
Google documents great for sharing larger files, and again it’s free to use up to a certain amount of data usage. Check out docs.google.com…and if you’re also in the habit of moving documents between your own devices, a free dropbox.com account is also very useful.