In today's Le Monde there is a useful five-part infographic showing how name to address resolution works, from the end user associating his or her endpoint device, e.g., a browser, with a file shareing resource, e.g., Megaupload.com, and how the FBI interposed on the name to resource mapping, preventing such associations. The amount of French poor Francophobes must read to understand the sequence of wire frame diagrams is limited (and Google does translate for those that need help). See Comment le FBI a-t-il bloqué Megaupload ?.
In updates to this post I'll expand on the aspects I think interesting.
First, while the DoJ sites are servicing the LOIC loads, a copy of the indictment can be found here: MegaUpload.pdf.
Second, to quote from the NYTimes piece to get to a quote from GW Law's Orin Kerr
The Megaupload case is unusual, said Orin S. Kerr, a law professor at George Washington University, in that federal prosecutors obtained the private e-mails of Megaupload’s operators in an effort to show they were operating in bad faith.
"The government hopes to use their private words against them," Mr. Kerr said. "This should scare the owners and operators of similar sites."
See 17 USC 512(c)(1)(A) for the significance.
A writer for the LA Times provides an interesting view in http://opinion.latimes.com/opinionla/2012/01/copyrights-feds-push-novel-theories-in-megaupload-case.html.