For which purpose? To me it looks like:

• Plug into a USB extension cable
  A little flexible section at the end is all you need; the USB cable does the reaching to where you want it.
• Hack it up and make other chargers
  Well, you can add more cable if you need it, since you're soldering anyway. Short is good though, I think.
• Plug it straight into a port on your computer
  What in the world are you thinking????

(All free USB ports on my computer are brought up onto my desk with cables, anyway. Maybe for laptops, this makes more sense to be longer.)