Megaupload
One of the most popular file sharing websites - until it got taken down by the FBI on the charges of "Conspiracy to Commit Racketeering", "Conspiracy to Commit Copyright Infringement", "Conspiracy to Commit Money Laundering" and "Criminal Copyright Infringement".
1: Hey! Download my Minecraft texture pack on Megaupload!
2: I can't! I just get an FBI warning!