Latest Server URL:
http://www.minecraft.net/play.jsp?server=f22ac9efca689d4cd3dfd9fc174b74b8
You need to have logged in to play an online server.
You don't need a premium account (since that is what you'll be winning if you do ^^).
You should see the message, "Abandoned Times Minecraft Competition", when you join.
[ed]
tested from other pc and mac (not linux or other Java platforms) - server works as does game.
yay.