To all of those who frequent the internet (which is pretty much all of you >_>), this is serious business! The U.S. is planning to block any and all websites based off of infringement claims, not only from the U.S., but outside the borders as well.
This means websites like Facebook, Wikia, YouTube, Steam, and many other would be blocked.
This is really a stupid law. The bill is still ongoing. We'll have to wait and see what happens.