News & Views - TweetsFacebook to Test GIFs in Comments Starting Next Week https://t.co/zv0pTPVXrU Posted on 29th March 2017 by Greenlight Facebook to Test GIFs in Comments Starting Next Week https://t.co/zv0pTPVXrU Greenlight YouTube Breaks Down What Metrics Matter for Adevrtisers https://t.co/ESSnbqCBCF YouTube To Offer Third-Party Brand Safety Tools | Digital – AdAge https://t.co/e0pgOqf4oP