Ido Guy is a Principal Research Engineer at Yahoo Reseearch, where he focuses on data science for Yahoo products in search, questions answering, and email. Prior to joining Yahoo, Ido was a senior technical staff member and manager of the Social Technologies and Analytics group at the IBM Haifa Research Lab. Under his management, the group developed and studied technologies in which people play a central role. Ido’s main area of research is social media, with special focus on social network mining and analysis and on recommender systems. He has published over 40 conference and journal papers, spanning the fields of Human-Computer Interaction, Information and Knowledge Management, and Data Mining. Ido received an IBM Corporate Award in 2010 for his contributions to enterprise social media. He served as program co-chair for the 2012 ACM conference on Recommender Systems.