"Summertime, and the livin' is easy," sang Ella Fitzgerald, making absolutely no reference to developments in social media. Quite a glaring oversight, as there have been a number of interesting milestones this summer. Instagram Stories now has 250 million daily active users, while Spotify hit 140 million monthly users. Katy Perry tweeted some stuff, and we liked it, as she recently became the first person in the world to reach 100 million followers on Twitter. What else has been going on? Lots. Pull up a sunlounger and let us cast our rays of social media goodness upon you.  

• GIFs arrive on comments threads.
• New tools added to Creative Hub.
• Instant articles feature is growing.
• Plan to tackle online extremism.
• New tools and effects for Messenger video chats.
• Two billion monthly users.

• Twitter
• New redesign is major facelift.
• Direct action buttons in DMs.
• Katy Perry first to hit 1 million followers.
• Instagram
• New photo archive function.
• Paid partnership feature.
• Stories has 250 million users.

• More TV coming to Snapchat.
• Snapchat's new ad publishing tool.
• Spotify hits 140 million monthly users.
• YouTube's heat maps for 360° video.
• Periscope monetises live streams.
• Snapchat's Snap Map.

• Apple's ARKit AR app.
• Holo app's iPhone AR.
• Snapchat's underwater SeaSeekers.
• An app that tells you which photos are good enough to post.