The Meaning Behind "Acta Diurna"
The Acta Diurna (also called Acta Populi, or Acta Publica), said to date from before 59 BCE, recorded official business and matters of public interest. Under the empire (after 27 BCE), the Acta Diurna constituted a type of daily gazette, and thus it was, in a sense, the prototype of the modern newspaper. ("Acta Diurna". Encyclopedia Britannica)
Latin for "Daily Acts." They're the ancient Roman version of blog posts.