As well as accessing your files via the Dropbox web site and your choice of operating system plugin, there is also an app for your iPhone, iPod Touch or iPad:
Dropbox.
There’s an app for that.* Access your Dropbox on the go
* Download files for offline viewing
* Sync photos and videos to your Dropbox
* Share links to files in your Dropbox
This now means that all files I share are now immediately available on my mobile devices, including PDFs, documents, spreadsheets, presentations etc. The built-in Apple editors/viewers render most content I would look to have access to (ODF formats are still an issue).
I know that I could do the same kind of sharing with Lotus Quickr and SNAPPS app for the device, but DropBox just works and is much easier to provision for non-technical folks.
Sign-up now to get your free 2GB DropBox account.