Amazon is currently the forerunner in the industry, but Yahoo/Intel/HP and IBM are clearly looking to contest for ground in the emerging market.
Steve McQueen's new film, 12 Years a Slave, contests this ground and returns us abruptly to the problems of race and human freedom.
He has insisted that he will contest the grounds for his suspension when his case is reviewed by Labour's national executive committee.
The Yankees charged the outnumbered rebels, but the rebels "gallantly met the onset, falling back slowly to a narrow lane, stubbornly contesting the ground," reported an unidentified Confederate in a pamphlet published during the war.
Expect hand-to-hand forensic contest on this ground.
Twain tried for years to get his contest off the ground.
And specifically he is seeking to contest the political ground now occupied by the "big society".
BEING named an American Dream Town in a national contest with no ground rules is an honor Greenport happily accepts, with reservations.
Mr Brown has never done anything like this before: he urged Labour to contest the centre ground as a young moderniser, and helped inspire the party's centrist election campaigns in 1997, 2001 and 2005.
