The community helps surface the news. The links to primary sources let you go further. And social integration helps it go viral.
twitter.com/i/events/11994…
It just shows up everytime people search for anything...which is tens of millions of times per day. medium.com/@balajis/how-b…
What Twitter has done with following topics is like v1 of this. thenextweb.com/twitter/2019/1…