The Electronic Frontier Foundation and the Tor Project have released a public beta of a new Firefox extension that lets people encrypt their communications with Facebook, Twitter, and other sites.
In addition to Facebook and Twitter, the Web sites that the software works on are Google Search, Wikipedia, The New York Times, The Washington Post, PayPal, EFF, Tor, and Ixquick.
The tool works by creating an HTTPS (Hypertext Transfer Protocol Secure) connection to the sites. But even if "https" is used, unless the address bar is colored and an unbroken lock icon is displayed in the bottom right corner, the page is not completely encrypted, EFF says.
Quote from
http://news.cnet.com/8301-27080_3-20008217-245.html
