Twitter Tools for Finding Influencers:
Twitter Grader: Twitter Grader is one of our free Grader tools that can help you find the top Twitter users by location and also measure the authority of a particular user.
Muck Rack: Muck Rack is a free website that enables you to search for and locate journalists by source (publication) or by beat (topic).
JournalistTweets: This free site curates tweets from journalists and allows users to filter journalists on Twitter by industry.
