How SOPA's 'circumvention' ban could put a target on Tor | Privacy Inc. - CNET News
http://news.cnet.com/8301-31921_3-57346592-281/how-sopas-circumvention-ban-could-put-a-target-on-tor
A broad interpretation of SOPA's anti-circumvention language would sweep even more broadly than Tor. Software such as VPNs, used by security-conscious businesses, can also "bypass" a SOPA-established blockade. So could DNS software. And even the humble "/etc/hosts" file, part of every major operating system including OS X, Linux, and Windows, can be pressed into service as a SOPA-bypasser as well.