This is a quite a good explanation of the bill to give authority to "kill" certain parts of the Internet to the president, but rather than give the president any more power than he already has in a national emergency, it defines what his powers over the Internet would be and what he could and could not do. Worth the read.

Find the article here:  http://www.fosters.com/apps/pbcs.dll/article?AID=%2F20110206%2FGJNE...

Link to a comment by a staff member of Ms Collins on her Facebook page when my friend Marcie  queried her about the kill switch (to the article above):  

http://www.facebook.com/susancollins/posts/149235105132648?n