LuAnn Phillips (SL: Thynka Little) has been using Second Life for her Cooperative Extension initiative since 2007. October 6th is the launch of the eXtension Virtual State Fair Week in SECOND LIFE® with a terrific program of both live events and informative displays. Cool!
http://www.extension.org/pages/The_LiveAbility_House
http://www.extension.org/learn/events/by_tag?tag=second+life