The document discusses the impact of social media on search engine optimization. It notes that while Google confirmed in 2010 that social media links were used in rankings, Google stated in 2014 that social media is no longer directly used as a ranking factor. However, social media activity can indirectly influence rankings if it drives links and engagement that are ranking factors. The document also explores Google's challenges with comprehensively indexing social media content and profiles due to access restrictions and verification difficulties.