I happened to come across this amazing site called Buzzsumo, http://buzzsumo.com/ which allows you to check what are the content trends depending on the keywords that you provide.
Find Amazing Content: The Top Content search makes it easy for you to find the most shared content across multiple social networks:
- Discover what people are sharing the most in your niche
- Analyze what topics, headlines, and content formats work
- Find interesting content to curate
- Discover guest post and interview opportunities
- Analyze your competitors top content by entering a domain