trst.me measures user reputation in a way far more robust than counting the number of followers: a high-reputation user is one that many high-reputation users follow. The trst.me score is currently based on a scale of 0-10, where 10 is the highest reputation possible. Read more »
Infochimps, a site to find data sets for any subject, made this application from the Twitter rank dataset. You can get access to the API here.
We've been collecting data from the Twitter API since 2008, and have tweets going back as far as March 2006. Our entire dataset contains nearly
90 million users, 3 billion tweets, and about
6 billion connections between users.