Socialbakers has been collecting a massive amount of social media data for the past years. They offer a free statistic tool that can tell you who has more fans on Facebook or who got more video views on YouTube.
They can tell you who are the top influencers on your industry, or you can compare how your Facebook page is doing vs. your competitor.
It is the perfect example of an early product built on the top of the social media hype (that now, jumping on the tech hype train, uses machine learning as well.) Their products are all about vanity metrics: fans, views, subscribers, followers, retweets, likes.
If your company cares about these metrics, you can solve the problem of integrating with Facebook, Twitter, Pinterest, Instagram or YouTube public APIs by integrating with their API.