Linux Journal checks out UNetbootin and usb-creator, two great tools for easily creating LiveUSB devices.
This issue of Linux Journal is all about how to get Linux in your pocket. In this article, I go one better and tell you how to get Linux on your fingernail. Now, before you get too excited, I won’t be discussing some new nano-computer being used by James Bond, unfortunately. Instead, I discuss how to put Linux on a micro-SD card (or any other USB drive, for that matter). Using this, you can run Linux on any machine that can boot off a USB device.
via Linux Journal.