Google already summarised displays results for a large number of search terms from websites such as Wikipedia, CIA World Factbook and Freebase as part of its Knowledge Graph feature. It recently started displaying 'how to' summaries, a move that could reduce search traffic to websites publishing how-to articles.
Even the roll out of song lyrics results could lead to decline in search traffic to websites that compile and publish lyrics. Google is also promoting its own content by placing the Play Store link with the results at the top.



