To my US friends, if you are reading about SOPA/PIPA today and want to help out, here's how:
Use this website (www.stopthewall.us
) and call your Senator. Yes, really call. It will take 5 minutes.
Why? Senators do not watch Facebook, Google+, web forums or really many online news feeds to figure out how their constituents feel about an issue. Emailing them helps but few Senators actually read their own email. Senator's do care about what the people voting for them think, they just are used to listening to lobbyist and large donors.
By calling, you get a direct line to their staffer to whom you can explain that you are in their district, you are watching this issue, and you are against PIPA (please be polite to them though). Calling also ties up a limited resource in the Senator's office. So at the end of the day when the Senator asks why certain things didn't get accomplished, the staffers will say "Our phone lines were tied up with people stating that they are against PIPA". That is how we can get our opinions across.
The call will take 5 minutes and doing it today, along everyone else and all the press going on, will have the biggest impact.