Use: Curate Tweets into a custom story for users
Twitter’s Custom Timelines allows publishers to create custom feeds by curating various Tweets into one stream. The custom timeline can be created manually or automatically through Twitter’s API and embedded into your Web site or be a standalone page with a unique URL. The feature will be available initially on TweetDeck, Twitter’s social media management app.
Publishers can use custom timelines to create a chronological re-telling of recent news story, aggregate comments about local personalities or events, promote a range of Web site or offline content, compare conflicting statements from politicians, etc. They can also use the product to assemble endorsements from various people for a particular advertiser or integrate sponsored posts into one stream.
The Next Web: Twitter announces ‘Custom Timelines’, lets users curate collections of tweets on any subject
Mashable: How to Create and Embed Your Own Custom Timeline on Twitter
TechCrunch: Twitter Announces Custom Timelines For Hashtags Or Topics On Tweetdeck, Launching API Too