BuzzSumo is a helpful search tool that tracks content on all social networking sites and ranks them based on the number of shares on Facebook, Twitter, LinkedIn, Google+, and Pinterest. It monitors content by topic or user and uses an advanced search engine to deliver accurate results. Discover what people are sharing the most in your niche Analyze what topics, headlines, and content formats work Get content alerts Find interesting content to curate Discover guest post and interview opportunities Analyze your competitors top content You can use BuzzSumo to prepare for your launch. Decide which websites/blogs to reach out to by analyzing who wrote about your market and/or competitors.