I also feel that maybe real-world examples of servers and domains being seized by the government, justified or not, might be more appropriate. Especially when the domains and hardware seized were due to potential copyright infringements and not overly-stringent spam rules.
http://www.wired.com/threatlevel/2011/12/wyden-domain-seizur...
http://torrentfreak.com/feds-return-seized-domain-111208/
http://www.wired.com/threatlevel/2011/07/domain-seizures-def...
http://www.electronista.com/articles/11/11/25/doj.ice.seize....
If SOPA passes, and this happened, we would be dead. Users won't wait around for months while the courts slog through a case, they'll just move to the next app.
Boycott Bluehost!
SOPA's censorship problem is not the explicit endorsement of censorship but the precedent of mechanisms and principles that will make censorship far easier to implement and "justify".