Twitter just announced a new feature called Moments, which are curated stories made up of tweets, images, videos, Vines, and GIFs. These are curated by both Twitter and select partners like Bleacher Report, Buzzfeed, Entertainment Weekly, Fox News, Getty Images, Mashable, MLB, NASA, New York Times, Vogue and the Washington Post (more in the future).
Twitter users can access and follow specific stories from a new lightning bolt tab. New stories appear throughout the day and are continuously updated and organized by topics like entertainment, sports, etc.
When you click on a "moment," you'll go to an introduction with a title and description. Swipe to get into the media, tap to get a bigger view of a tweet, then retweet/favorite accordingly. There's a progress bar that shows you how much more there is to each moment. You can swipe up or down to dismiss a moment and go back to the guide.
— Twitter (@twitter) October 6, 2015
In its Moments Guidelines document, Twitter says:
Sometimes Moments will parallel what is relevant on the world stage or in the media; other times, they will be built on content unique to Twitter. We will select Moments based on what is happening on Twitter, or create Moments based on Twitter content featured across media outlets. When selecting Moments around controversial topics, we will choose topics that are big news in the mainstream press or are demonstrably large public conversations on Twitter.
We avoid creating Moments that may invade privacy, encourage illegal activities, exploit or harm minors, or make Twitter, Inc. a focus of the story. We do not duplicate curated collections or sets of Tweets embedded on a single third-party website, or those retweeted from a single Twitter account.
Moments is rolling out to US users on Android, iOS, and web. Users outside of the US can still view them if they've been shared with them.
More on Moments in this help center article.
Images via Twitter