MGI-LIST (http://www.informatics.jax.org/mgihome/lists/lists.shtml) is a forum for topics in mouse genetics and MGI news updates. It is a moderated and active email-based bulletin board for the scientific community supported by the MGD User Support group. MGI-LIST has over 1800 subscribers. A second list service, MGI-TECHNICAL-LIST, is a forum for technical information about accessing MGI data for software developers and bioinformaticians, for using the APIs and for making web links to MGI pages.