The document discusses how agenda setting theory and gatekeeping have been affected by social media. It argues that [1] traditional media agenda setting is now just one influence among many due to content sharing online, and [2] publishing platforms make it much easier for individuals and communities to directly share and publish content, leveling the playing field and changing who acts as gatekeepers of information flow. The rise of easy content sharing has led to new forms of agenda setting and influenced who controls access to wider audiences.