BuzzSumo
BuzzSumo provides data, in chart form, on how often a particular word, phrase or other entity is being shared on major social media sites such as Facebook, LinkedIn, Twitter, and Google+
This is a pretty cool site for finding out what kind of content is resonating on social media, as measured by what is being shared the most. It is simple and intuitive to use, but still offers useful search filters for narrowing results. There is also a function for locating influencers and for receiving daily alerts. The paid version provides a longer listing of where content is being shared, as well as unlimited top content, influencer and trending searches. Consider this site if you need to find out which words, phrases, brands, or other text based content are being shared most frequently on social sites.