This doesn't include sites or posts digging up evidential information, like the MacBook Air domain name stuff.

ENGADGET: Macworld 2008 rumor report card: some hits, mostly misses

It is common for cyber strategists to refer to cyberspace as a domain like air, land, sea, and space.

FORBES: DOD Cyberspace Strategy is Too Narrow, Too Negative

It was also the era when air travel was strictly the domain of the wealthy and business passengers, and family travel was reserved for the most special of occasions.

CNN: Air rage: Passengers 'quicker to snap'

We will enhance domain awareness in air, maritime, and land environments, cooperate to counter violent extremism, and develop harmonized commercial passenger and cargo screening processes that will expedite the secure passage of people and goods.

WHITEHOUSE: The White House

The labour of love of eccentric English aristocrat Sir Stewart Gore-Brown, it is approached down a long, tree-lined drive, flanked by farm buildings, settlements and workers houses, giving it the air of an old feudal domain.

BBC: Escaping modern life in Zambia��s north

Between them, they bring deep experience in virtually every domain -- land, air, space, sea, cyber.

WHITEHOUSE: President Obama Makes Defense Personnel Announcements

Cyberspace has become the fifth domain of warfare, after land, sea, air and space (see article).

ECONOMIST: The threat from the internet