The Stop Online Piracy Act (SOPA, H.R. 3261) is on the surface a bill that attempts to curb online piracy. Sadly, the proposed way it goes about doing this would devastate the online economy and the overall freedom of the web. It would particularly affect sites with heavy user generated content. Sites like Youtube, Reddit, Twitter, and others may cease to exist in their current form if this bill is passed.
The Protect IP Act (PIPA, S. 968) is SOPA's twin in the Senate. Under current DMCA law, if a user uploads a copyrighted movie to sites like Youtube, the site isn't held accountable so long as they provide a way to report user infringement. The user who uploaded the movie is held accountable for their actions, not the site. PIPA would change that - it would place the blame on the site itself, and would also provide a way for copyright holders to seize the site's domain in extreme circumstances.
Sometimes I hate my country. Please stop this at http://sopablackout.org/
Thanks