Blog Action Day, codenamed #bad09 by tech gurus and geeks, is an annual event that unites the world's bloggers in posting about the same issue on the same day.
Siku ya Kublogu, iliyoitwa kwa jina maalum la #bad09 na wanateknolojia pamoja na waliobobea kwenye fani, ni tukio la kila mwaka linalowaunganisha wanablogu wote ulimwenguni kwa kutundika habari zinazozungumzia suala moja katika siku hiyo.