Dropbox. The answer to the people’s cry for easy, free online storage. With support for iPhone, iPad, Mac OS X, Windows and Linux, this service is a must have. Dropbox boasts incredibly easy and quick file sharing with just a click, letting you share the folders you want with the people you need. Uploading a file with your iDevice is as simple as a few taps of your finger, and instantly, it’s available on all of your devices running Dropbox, all in sync. Star your files to save them to your device. Quickly upload that file to your Dropbox so that you and your colleague can edit it on their computer. Access your files from any computer that has an internet connection. 2 gigabytes of storage for free, brought to you by Dropbox. Available in the App Store for free download. HD Video Review Below
Thanks harry for the writeup!
The iPhone Help
The iPhone Help