Kirk Douglas, the square-jawed hero famed for saving the world, getting the girl and in moments of toga-clad inspiration declaring “I am Spartacus!” has a new string to his bow — as MySpace’s oldest celebrity blogger. The 92-year-old actor, who retired from the screen five years ago, is cutting a fresh swath through Hollywood with a page on the social networking Web site that reflects on his “years of living, loving and learning” and records the genteel details of his life.
