Diablo III Server status page
If you want to be informed about the Diablo III game-server and Auction House status, you can check it here:
http://eu.battle.net/d3/en/status
It is also available as Android App in the play store:
https://play.google.com/store/apps/details?id=org.eluamous.d3serverstatus
If you are too lazy to type the link, just use the code 😉