According the the developer, MetroPipe, you can “Carry your entire Internet communication system on a tiny USB drive.”
The user does not have to have a lot of Linux experience to use it. The software runs a little on the slow side due to operating within the emulator. However, the software gives the user a complete environment for browsing the internet with FireFox (web browser), Thunderbird (email), aFTP (ftp), and other tools. Best of all, you don’t leave your internet traces behind–everything is contained in your USB key. After you finish surfing, just exit the environment, eject your USB key and you are good to go.