I'm a writer and I wanted to be able to read my current progress on my phone while I'm on the go. I have a Gmail account, so I figured that I would email myself the PDF of the current work and then read it from my iPhone's inbox when I need to (when I don't have WiFi or EDGE, such as a plane). Unfortunately, it seemed that my iPhone wasn't actually downloading the messages permanently from my Gmail inbox, and merely retained a temporary copy. I needed a permanent copy for traveling. So I went to Yahoo! and set up an account. I activated it on my iPhone and then sent myself another copy of the current work to the Yahoo! account. I was immediately 'pushed' the email, and the attachment was saved to my iPhone. I turned off my iPhone and restarted it into Airplane Mode and still the document was still there. My Yahoo! Push Mail account just became my iPhone Document Reader. It will work with any document the iPhone can read (DOC, PDF, etc.). There you have it, here's the short version. To download documents to your iPhone for later use (later being when you don't have a connection to the Web): 1. Start a free Yahoo! Email Account. 2. Set it up on your iPhone (Settings, Mail, Add Account). 3. Email the Yahoo! Address the file you want to save. 4. The Yahoo! account will 'push' the attachment to you and save it for later viewing. 5. The iPhone's Mail application just became a document viewer! Hope this was helpful as it certainly solved one of my major problems.