Re: Megaupload Shut down by FBI
SOPA has been "shelved" for now, but it's gone for good. That is, the bill itself, not its contents. They won't try such a well known bill again, but everything they tried to pass in SOPA will come back attached to some future bill or another under a different name.
To my understanding, the US already has sufficient legal grounds to shutdown sites like MegaUpload, which is probably more than they need. What SOPA would have given them was the ability to hold websites accountable for all user generated content, which included simply linking to a pirate website.
As for their intended method of removing sites from the Domain Name System, the US Department of Homeland Security specifically stated that such measures were a risk to national security and completely counteractive to what they themselves were doing. Not to mention it would have been completely useless, since removing a site from the DNS doesn't remove the site from the internet, you'd still be able to access the site by typing in its IP address.