What does S.I.S. mean?Home › Forums › Horse Racing › What does S.I.S. mean?This topic has 19 replies, 14 voices, and was last updated 17 years, 6 months ago by robnorth.Viewing 3 posts - 18 through 20 (of 20 total)← 1 2AuthorPosts October 22, 2008 at 23:39 #185933 AnonymousInactiveTotal Posts 17716Serious Incapeability Spencer October 23, 2008 at 14:15 #185994 TedMemberTotal Posts 150Satellite information services.But it ain’t in any form book. October 23, 2008 at 14:57 #185997 robnorthParticipantTotal Posts 8403TedI’d resisted that one SOOOOOO hard for a couple of days!RobAuthorPostsViewing 3 posts - 18 through 20 (of 20 total)← 1 2You must be logged in to reply to this topic.Log In Username: Password: Keep me signed inLog In