Google has blacked out its logo in protest of SOPA. The company has also put up a blog post calling for visitors to petition Congress.

Google’s head of web spam, Matt Cutts, who has been a vocal opponent of SOPA and PIPA for some time, has also put up a new blog post calling for people to call senators. about it. In fact, he even went so far as to include an interactive widget to call, email, tweet, or Facebook Senators (which it determines by your location).

“Now it’s time to rally and get loud. It’s time to call your Senators,” says Cutts. “Heck, it’s time to ask your parents to call their Senators. If you think the internet is something different, something special, then take a few minutes to protect it. Groups that support SOPA have contributed nine times more money in Washington D.C. than our side. We need to drown out that money with the sound of our voices. I’d like to flood every Senator’s phone, email, and office with messages right up until January 24th.”

“It’s time for action,” he says. ”Call your Senator right now. Spread the word to your friends and family. Promise not to vote for politicians who support SOPA. Print out some PDFs and post them at work or on your campus. There’s also protests and meetups happening today in New York, the Bay Area of California, and Seattle. Don’t live in the United States? You can still petition the State Department at americancensorship.org.”