Abstract
Carnegie Mellon University Libraries began its chat reference service in October of 2000. The article explains why library administrators decided to institute chat reference and the steps taken to implement this decision. The Libraries utilize commercial off-the-shelf software called LivePerson. Service evaluation features of LivePerson provide interesting data for analysis. Summary statistics of the service and the cumulative results of post chat surveys (filled out by chat patrons on a voluntary basis) are presented. Plans for future enhancements of the chat reference service are discussed.