LibQUAL+ is a suite of services that libraries use to solicit, track, understand, and act upon users’ opinions of service quality. The program’s centerpiece is a rigorously tested web survey paired with training that helps libraries assess and improve library services, change organizational culture, and market the library. Since 2000, more than 1,300 libraries in 29 countries have participated in LibQUAL+, including college and university, community college, health sciences, and academic law libraries. This growing community of participants and its extensive data set of more than one million completed surveys are rich resources for improving library services. (See http://www.libqual.org