Tails stands for The Amnesiac Incognito Live System -- a new Linux distribution for users who want to leave no trail on the Internet.
A couple of weeks ago I posted some information about the Department of Defense releasing its Lightweight Portable Security (LPS) Linux distribution aimed at giving remote workers a more secure way to access government networks -- but also available to the public for anyone's use who wants a little extra security.
I found another very similar distro called Tails, which is aimed more at general users who want to shield themselves, or at least their web activities, from prying eyes. The funny name is an acronym for The Amnesiac Incognito Live System, and it is "designed to be used from a CD or a USB stick independently of the computer's original operating system. It is Free Software and based on Debian GNU/Linux."
Tails relies on the Tor anonymizer to handle all your Internet activities:
Tor protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, and it prevents the sites you visit from learning your physical location.
You can read all about it on the informative Tails website and download version 0.7.2 if you decide to take it out for a spin.