“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. Tor works with many of your existing applications, including web browsers, instant messaging clients, remote login, and other applications based on the TCP protocol.”
This is something of great value to our friends in Iran.
Get Tor & Help Iranian Freedom
(all found at https://www.torproject.org/easy-download.html.en)