At present, the three main uses of virtual hard drives are for remote backup of the most critical data; go-anywhere, get-anything computing; and collabo-ration among remote (or even local) work-group members.
As your data piles up, so do the consequences of losing it-not to mention the hassle of protecting it. Who in the world has time to regularly back up a 25GB hard drive on the schedule recommended? Even if you do, keeping backed-up data near your PC doesn't protect it from theft, fire, floods or your curious 2-year-old.
Also, many of us are using a variety of devices to compute in a lot more places than home and the office. What about your PDA and cell phone addresses? Your laptop files? Where's the latest version of that memo, worksheet or address being kept, and how can it be synchronized among your different computing devices?
One answer to all these challenges is to keep your data on the Web-at least, your critical and frequently used files-and slice off small chunks as you need them with any browser-equipped computing device. Collaboration is also easier when data is kept in a common location instead of being passed around as e-mail attachments.