Sir Homer writes: "Blizzard Entertainment has shut down the bnetd project using the DMCA, as declared in their site. The bnetd project is a battle.net server emulator licenced under the GNU/GPL originally for Linux and also works on most Unix variants. Project details can be found on this freshmeat.net page."
As I understood it, bnetd was a complete re-implementation of battle.net, so it isn't clear what copyright violation Blizzard alleges occurred. Note to bnetd: under the DMCA, you can file a counter-notice
with the hosting provider asserting that Blizzard was wrong.