Page Rank for Twitter Authors

On Twitter people follow each other. This creates a social graph. Using this graph can we identify interesting authors? This question can be answered by computing the Page Rank score of each user and then finding those users with the top scores. .

This project will use the entire follower graph for data (1.5 billion arcs, 41 million users).

A starting point on using Map Reduce for PageRank. Can this be made more efficient?