Besides being very small and cheap, USB flash drives are really simple to use: plug one into a computer's USB port and you can access the documents stored on the drive immediately. You can also run portable programs from the drive without having to install them on the host computer. Because program settings (e.g., favorite bookmarks in Firefox) are also saved on the drive, it's like having your own personal computing environment with you wherever you go.

You can use a USB flash drive to:

Keep emergency information and current project files always at hand
Have your browser and other program settings with you for secure use on any computer with a USB port
Troubleshoot and repair computer problems
Make Windows run faster
Run a different operating system without changing your hard drive
USB flash drives can hold several gigabytes of data -- enough to make sure you always have in your pocket or on your keychain stuff like your latest projects files, Outlook files, photos of your house and equipment for insurance purposes, medical records, contact lists, and other essential information you would need with you in case of emergency or just for accessing on the go. If you sometimes have to work in different offices or travel a lot, USB flash drives are great tools for accessing your work files wherever you go.
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