The internet has opened new doors in communication amongst dog fanciers.  Aside from breed specific email list, the following may be of interest to you:

Show Dogs Ontario
An email list devoted to discussion of purebred dogs and events in Ontario!

Canadian Show Dogs
For those with an active interest in dog competitions...from Juniors to Judges; from novice handlers to the Professional. This is the oldest National list covering all aspects of Conformation shows, Obedience, Field Trials, Drafting, Agility and more! Everything about dog events is discussed..travel hints, entry info, show brags..the list is endless. Join the original and largest Canadian Show Dogs list on YahooGroups!!

Canadian Junior Handlers
A list for Junior dog handlers of all ages, current and past.   A place to exchange ideas, make new friends, learn new things.   For junior show handlers, obedience, flyball, agilty, anything dog related! Come and chat.  Group web page: http://www.geocities.com/canadianjuniorhandlers