Social Media News: New Snapchat Algorithm; Facebook Messenger Broadcast

This week’s ‘Skim: why Snapchat’s new algorithm is unique and what it means for users; Facebook preps Messenger Broadcast for business communication; Twitter tests a bookmarking feature; YouTube gets more social with its own version of Snapchat Stories, also faces advertiser exodus because of children’s-content complaints; Tumblr’s CEO is stepping aside after 10 years on…

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