When you need to move files back and forth between two (or more) computers on the same desk or in the same office, you have a number of options.
When you need to move files between devices in different states, your options are rather more limited, and most of those options are in the cloud.
One of the most popular for desktop computers is Dropbox, which is now available for the iPhone.
With Dropbox, you designate a desktop folder or subdirectory to synchronize, and then sit back and let the cloud-based storage system do its thing.
On the iPhone, Dropbox allows you to upload and download files, and it provide links to individual files for collaborators to share entire subdirectories with coworkers. Dropbox also lets you view common file types like documents, spreadsheets, and photos.
For a business user on the go, the ability to provide the link through email is critical, and the ability to view the files can be a lifesaver.
In my case, I was already using Dropbox as a way to share files between my Macintosh and Windows machines, and the Web-based interface allowed me to reach my files when I was away from any of my computers.
A free account comes with 2GB of storage, and you can upgrade to paying accounts that include 50GB ($9.99 per month) or 100GB ($19.99 per month) of storage.
There are other file sharing and cloud storage systems out there, but Dropbox works beautifully across a variety of platforms and has proven to be reliable over long spans of time.