YouSendIt Lite lets you share files (up to 100MB) privately over the web. It lets you save a large(ish) file on their server. The person you want to get the file to receives an email message with a link showing where to get the file. The recipient has up to 7 days to pick up the file. Ut seems like a reasonable and simple way to get files (Visio, PowerPoint, and other largish files come to mind) that are a bit too big to send as an email attachment.

Like many web services, you can opt to get more features (and space in this case) by paying an additional monthly fee.