There are many ways to get involved with WorldVistA, depending on your interests and the skills you wish to exercise. If you are looking for information about the VistA software, many people participate in the Hardhats mailing list, use the Sourceforge Forums, use the OpenForum wiki, and participate in the Friday community conference call. If you want to be involved in development of software, there are also technical meetings and development meetings.
Hardhats (discussion list / Google Group)
WorldVistA-Services (discussion list / Yahoo Group)
Old Hardhats List (archives from 12/2008)