Upgraded for 2.0:
MATCH (user:User)<-[:follows]-(follower)
OPTIONAL MATCH (follower)-[:follows]->(other)
WITH user, follower, 1.0 / (0.0 + COUNT(other)) AS weighted
WITH user, COUNT(follower) AS numFollowers, SUM(weighted) AS totalWeighted
RETURN user, numFollowers, ROUND(totalWeighted * 100) / 100.0 AS totalWeighted
ORDER BY ID(user)