Historical clue formulations

• Publishes an exposé, say — 2026-03-20
• Blabs, blabs, blabs — 2010-12-11
• Spills the beans — 2006-02-01
• Sings — 2002-06-01
• Blabs — 2001-06-07
• Is a blabbermouth — 2000-03-12