Providing members of a managed behavioral health organization with free Web site access did not appear to promote or delay their use of mental health services. Among members who had access, those who visited the site had more outpatient sessions than those who did not. This finding suggests two possibilities. First, the material on the Web site may have led members to obtain treatment or, if they were already receiving services, it may have reinforced their commitment to treatment. Alternatively, those who visited the site may have had more severe conditions or perceived a greater need for help and may have been more likely to use more treatment sessions.