[listening]

SOPA does not have to pass to achieve the effect I'm suggesting. It will simply open people's eyes to the centralisation that is ongoing. The "single point of failure" will become evident and people will start to think.

No software is needed. Nor is a DNS. All modern PC OS's have the necessary capabilities built-in.

To connect to a website all that is needed is the knowledge of an IP number, a port (almost always 80) and, optionally, a hostname.

Is it really possible to prohibit this knowledge?

Imagine a world where there are "forbidden" phone numbers. However no one is forbidden from dialling them. The sole prohibition is against telling anyone what they are.

This is what SOPA blacklisting purports to achieve.