Source: http://feeds.gawker.com/~r/lifehacker/full/~3/Dw7db7HK3tk/dropbox-comes-to-the-iphone-and-ipod-touch
iPhone/iPod touch only: Dropbox, one of our favorite cross-platform file-syncing tools, has now made its way to the iPhone and iPod touch, complete with offline file viewing.
Once installed on your device, Dropbox for iPhone provides access to all your Dropbox files, allows you to view any file supported by your iPhone (including documents, photos, music, and video), uploads any photo or video you've taken on your device to your Dropbox account, and lets you save any file as a favorite for offline viewing. If you want to share a file in your Dropbox with someone else, the application can generate an email with a link directly to the file.
I first saw a demo of Dropbox for the iPhone way back at SXSW in March, so it's great to see this app finally make its way to the App Store. In short: If you're already a fan of Dropbox and you've got an iPhone or iPod touch, you'll want to download this app. Like the Windows, Mac, and Linux versions, Dropbox for the iPhone is freeware and requires only a Dropbox account.