Ewwww what a wonderful question!
Clinical Informatics nurses are responsible for insuring clinical input is sought and reflected in decision-making processes related to planning, selection, design, use, evaluation of clinical information systems technologies as applied to patient care and clinical practice.
Sorry about the long sentence.
Or we could just use the ANA/ANCC definition of Nursing Informatics which reads:
Nursing Informatics is a specialty that integrates nursing science, computer science, and information science to manage and communicate data, information, knowledge and wisdom in nursing practice.