Wavii, based in Seattle, works by scouring the Web, including news sites, Twitter and blogs, for news about a vast number of topics. It then automatically creates the equivalent of a status update on the topic that summarizes the news, often in just one sentence, with a link to the full story on the site from which the news originated. Users see a Facebook-like feed with updates on all the news topics they follow, including corporate acquisitions, celebrities and corporate news.”]
Source: https://bits.blogs.nytimes.com/2012/04/13/wavii-a-facebook-for-topics/