If passed, PIPA would become a law with the intention of giving the US government and copyright holders methods to limit access to "rogue websites dedicated to the sale of infringing or counterfeit goods", in particular those registered outside the U.S.

SOPA would become a law intended to expand the ability of U.S. law enforcement to combat online copyright infringement and online trafficking in counterfeit goods.

Both laws sound nice when you just hear the generic description, but if passed they have the potential to have devastating effects on the Internet we are familiar with.

'Imagine a World Without Free Knowledge' is written on Wikipedia's main page today. Several sebsites take part in anti-piracy bill protest. Stop Online Piracy Act (SOPA) and the PROTECT IP Act (PIPA) are a threat to the open access to information and knowledge. If they pass, it will concern everyone and restrict the daily digital life. These bills would change the internet completely and reducing it from a place of knowledge, sharing and communication to an only a profit based market.

Get more information about it here:
What Is SOPA Anyway? A Guide to Understanding the Online Piracy Bill
Wikipedia, other websites go dark in anti-piracy bill protest