BuzzSumo has crawled over 80m urls and tracked over 1 billion social shares. It has also crawled details for 40m influencers and sharers so you can now analyze the urls shared by key influencers.The insights gained from using the tool allow marketers to develop improved SEO campaigns, influencer outreach programs and to develop content marketing that engages users. The tool is also used by many journalists to keep tabs on trending content across social networks.