Instagram tests a new Messenger integration, Facebook tests an email marketing tool and LinkedIn rolls out new learning courses on diversity and inclusion.
Instagram rolls out IGTV ads, Facebook's NPE team launches a voice only app - CatchUp - and Twitter rolls out a native Tweet scheduler.
Facebook launches Shops, Twitter tests ways to limit conversations and Pinterest publishes a guide to help your Pins stand out.
LinkedIn launches Virtual Events, Instagram introduces new measures to tackle bullying and Twitter updates engagement statistics to include Retweets with Comments.