Controlled vocabularies facilitate interoperability but present challenges related to cost, usability, and interdisciplinarity. The Helping Interdisciplinary Vocabulary Engineering (HIVE) project aims to meet some of these challenges by providing an approach for integrating multiple controlled vocabularies. A companion effort to the ongoing development of HIVE, this research study developed and implemented a Web survey targeting many roles associated with data repositories - data contributors, data curators, DataNet administrators, and repository developers - regarding their uses of controlled vocabularies. Results indicate that a long tail of controlled vocabularies is currently in use by data repositories. Although the convenience sample of this study cannot be generalized to the broader population of data repository stakeholders, the results of this study indicate that a future study could reasonably hypothesize that demand for HIVE-like services exists among data contributors, data curators, and repository developers.