To top that, format the flash drive and toss on PortableApps. You can then add Firefox and a slew of other portable variants to the drive (as long as you have the space). That version of Firefox will leave no trace of where you were, and you can even set it to wipe all of your browsing data each session. I use it at school, and I am able to keep track of every bookmark and site I go to. Quite useful when a campus is so restrictive.