@CNN: Starting next year, Facebook will test six-second ads at the beginning of some videos https://t.co/QbjZR2wKlz https://t.co/zgQqisAMSX

@CNN: Starting next year, Facebook will test six-second ads at the beginning of some videos https://t.co/QbjZR2wKlz https://t.co/zgQqisAMSX