Here is a letter I sent to my local representative:
I understand that a new bill is being proposed nicknamed PIPA. I understand that this bill will "put the burden on website owners to police user-contributed material and call for the unnecessary blocking of entire sites. Small sites won't have sufficient resources to defend themselves. Big media companies may seek to cut off funding sources for their foreign competitors, even if copyright isn't being infringed. Foreign sites will be blacklisted, which means they won't show up in major search engines." (You can find the same statement on wikipedia.org, along with some handy info about how to contact your local representatives and tell them to vote NO!)
This has tremendous power for abuse. As a user of youtube.com, I can attest that I have seen numerous individuals have their accounts disabled because someone told Youtube administrators that copyright infringement occured when in fact it had not. If companies and/or individuals had the power to easily "blackball" someone like this on every website like they can on youtube, then this of course means that people will (at least in some cases) abuse the privilege. Bottom line: we must find a better way to stop copyright infringement than trampling on free speech. The ends don't justify the means. Vote no on PIPA.
Here's a petition you can sign. Sign it, then tell your local reps to vote NO. Here's a handy vid that explains it: