Bueno pues eso si intentais abrir el steam y no conecta es normal, no os preocupeis. Por lo visto los servidores de steam estan en seattle y hay una tormenta tocha que los ha dejado sin luz.
Los de la electrica dicen que no saldran a arreglarlo hasta que no pare la tormenta.
"There is currently a wide spread power outage in Bellevue/Seattle impacting Steam Server availability. Unfortunately ETA for when the power will be restored is unknown as the power company will only work on restoring it once the storm has eased and the high winds have died down.
Any issues you are experiencing with connecting to Steam are only temporary, as this isn't an end-user issue."
Sacado de los foros oficiales.