Guide picks
About.com Racing Chat
Fairly popular and usually has people in there at night. Requires Java so won't work for WebTV.
About.com Racing Forum
Powered by Delphi, this is my forum. Requires a userid to post but you can read only as a guest
alt.sport.horse-racing
The first and the best newsgroup for US racing. Read @ DejaNews
alt.sport.horse-racing.systems
Mostly contest messages. Read @ DejaNews
AusRace
Email list all about horse racing in Australia and New Zealand.
AusHarness
Australian and New Zealand harness racing mailing list.
Blood Horse Interactive Forums
Racing and Dosage forums, requires a userid and password to post.
Breeder's Digest List
List with an emphasis on breeding and pedigrees. Read online here or get via email by following instructions here.
Daily Racing Form Player's Forum
Message board for handicappers sponsored by the DRF.
Del Mar Fan Forum
Interactive forums sponsored by Del Mar which you read online or receive as a digest via email.