Although Google is not going to the lengths that Wikipedia is to show their opposition to SOPA and PIPA, they have nonetheless joined the effort with what could be called their most spartan Google Doodle ever.
When you visit Google you're met with this, a giant black censor bar over the Google logo. The only part of the logo barely visible is the bottom of the second "g."
Clicking on the logo or the link just under the logo takes you to a SOPA / PIPA landing page that displays these words:
Millions of Americans oppose SOPA and PIPA because these bills would censor the Internet and slow economic growth in the U.S.
Two bills before Congress, known as the Protect IP Act (PIPA) in the Senate and the Stop Online Piracy Act (SOPA) in the House, would censor the Web and impose harmful regulations on American business. Millions of Internet users and entrepreneurs already oppose SOPA and PIPA.
The Senate will begin voting on January 24th. Please let them know how you feel. Sign this petition urging Congress to vote NO on PIPA and SOPA before it is too late.
The page also gives you the option to sign a petition against the legislation. Just enter your name, email address and zip code and you can join the fight. After this, Google asks you to share the petition on Google+, Facebook and Twitter.
Blacking out their logo as opposed to shutting down their whole service might be seen as a small measure, but with the amount of people viewing Google.com daily, it is bound to make an impact.