From Ars Technica- "The government can also go after anyone who builds a tool designed for the "circumvention or bypassing" of the Internet block." Websites like Anonymouse, that replace your computer's address with theirs (for instance, if you want to send an anonymous message), would also be blocked. In other words, the government now demands to "read your mail", and track your activity.
Yes, I'm on my soapbox with this topic. Internet commerce worth trillions is at stake because Congress got a few hundred thousand dollars more in contributions from the entertainment industry. http://tech.fortune.cnn.com/2011/12/21/sopa-supporters-are-cashing-the-medias-checks/