> As Instagram kept on growing, Mr. Zuckerberg believed there were ways it should help Facebook grow and improve Facebook’s “user engagement.” That included small tweaks, like automatically sharing Instagram “Stories” videos to Facebook without clear signs indicating the videos were taken on Instagram.

That's a little sneaky. I had started to notice more stories when I opened FB, and it was always the people I'm also friends with on Instagram. I hadn't realized that they may be coming from Instagram.

> Earlier this year, Facebook also removed a shortcut link to Instagram from its “bookmarks” menu inside the Facebook app, a small but significant source of traffic that flowed from Facebook to Instagram.

What would the point of this be? Why would FB want to shut off traffic to another one of their properties?