Over 2 billion searches are conducted daily on Web search engines. Some Web searches are re-finding what was seen before, but many searches are query reformulation or refinements as attempts to retrieve better results. Previous studies have examined query formulation and reformulation from the mid-seventies to today, including online intermediary and end-user searching, CD-ROM and OPAC environments, and Web search studies. Query research is important theoretically and practically for the Web industry. This panel presents three recent query formulation and reformulation studies in diverse environments and user groups, including Web search logs and Web searching by 4–5 year olds. The short panel presentations will highlight the theoretical and practical implications of the results and allow sufficient time to engage the audience in discussion.