I have become increasingly impressed with this developing area of technology, there are several manufacturers supporting it e.g. Sandisk with their U3 application, others use portable apps (www.portableapps.com).
For me the attraction is all my software available in a form I want with the settings I prefer on a usb stick which I simply plug in to a host computer with an Internet connection (hopefully). It has major advantages for troubleshooting too with your own tools available and hopefully virus free.
I hope piriform will make their applications available in this form really soon - they can be used off the stick, but to have them as a menu item would be great.
I see potential in both the home and business world for this to develop where the user has a stick - especially as the prices drop 2gb for a fiver, and has little or no software on a machine, only data. The potential for on the fly encryption of this small area then becomes attractive and without performance penalties.
Regards
Anthony