CIKM 2009 took place in vibrant Hong Kong from November 2 to November 6. CIKM is a leading ACM conference that brings together researchers from the fields of information retrieval, databases, and knowledge management. Yahoo Labs outperformed its previous year’s presence, taking the awards for best paper, best student paper, and runner-up student paper out of a record 30 accepted papers. This year, the technical program featured many interesting papers in areas such as information extraction, ranking, Web search, social search, personalized search, social networks, graph mining, Web mining, probabilistic databases, stream processing, clustering, classification, cloud computing, and more. The wins at CIKM: Best Paper Award On the Feasibility of Multi-site Web Search Engines Ricardo Baeza-Yates, Aris Gionis, Flavio Junqueira, Vassilis Plachouras, Luca Telloli Best Student Paper Award Fast Shortest Path Distance Estimation in Large Networks Michalis Potamias, Francesco Bonchi, Carlos Castillo, Aris Gionis Runner-up Student Paper Compressing Tags to Find Interesting Media Groups Matthijs van Leeuwen, Francesco Bonchi, Arno Siebes, Borkur Sigurbjornsson Click here for a full list of Yahoo accepted papers at CIKM 2009.