As a scientist I believe the free share of information (which is not the same as to say of property) should prevail throughout the vastness of this global tool we have available. I’ve worked for private companies and I do believe in their right to keeping private the information they have invested in. But with SOPA there is an issue with freedom of speech and nobody wants to have their accounts monitored by a government, any government. Please read “1984” by George Orwell to have a better understanding of how false security and safety is not worthy of a captive society under surveillance.
You have all gained something by the free share of knowledge in this blog, as I’ve had from other online resources such as the CCL. If SOPA is passed, then I, we, may not be able to provide help with the use of commercial software such as Gaussian, for instance, and the progress of science would be directly hurt.
I do not endorse piracy. Private companies are entitled to profit as a return of their investments. But laws such as SOPA would only hurt those trying to make the most out of the largest communication media ever created in the history of mankind, while doing little to protect investors and developers. Many are the examples of developments arising from public effort: Wikipedia; Linux; OpenGL; The GNUproject. Open share of ideas have brought this and many other resources which ultimately result in the development of science and technology. Please read this article (in Spanish) by Dr. Alejandro Pisanty, a former teacher of mine at the Chemistry School. He was the head of the Academic Computing Services at UNAM, and one of the founders of the Computational Chemistry List (CCL); He most definitely knows a thing or two about information technologies.
It should be clear that the openness of the Internet has clear advantages as seen a year ago when the people from Tunisia got organized online and got rid of a dictatorship. Control of communication is a common treat of fascist and authoritative regimes. Information set them free.
Dr. Joaquin Barroso's Blog 
You can protest and even have a blackout. Go to Dashboard, Settings and there you should see an option Protest SOPA. I hope it helps.