hi Andrew, bX derives from research done at Los Alamos National Laboratory by Johan Bollen and Herbert Van de Sompel. Its ranking and algorithm can be analyzed in the published article http://www.slideshare.net/hvdsomp/the-bx-project-federating-and-mining-usage-logs-from-linking-servers Can SerialsSolutions point us to something explaining Summon’s Recommender? ========== [log in to unmask] • If you're not part of the problem, you're not part of the solution •