Today it is becoming more and more common to be carrying a USB key around with you. There are two reasons for this: the first is that it is an extremely practical way to carry your documents or any other computing files around, and the second is that with their current price (you can now purchase a 1GB USB key for around €30) it would be a shame not to take advantage of this.
The keys (or portable hard drives) allow you to store more and more things and to use the space more intelligently. When you use your computer at home you will have all of your usual programs available to you, with their settings making it practical for you to do anything that you want. When you use a PC other then your own, the programs are often not the same and perhaps you can’t find what you are looking for…. Simply, it can be a real pain.
source: wikipedia
What this article is aiming to do is to use the space available on your USB key to store your work environment, and to make it portable! This will also allow you to load your programs on any PC, making it a lot nicer to use, right'