I use ssnakess, reptile rescue, and I have also joined a few mailing groups in yahoo. Ottawa herps, Montreal herps, Canadainherps, and Canadianherps. They help out, plus of course word of mouth and pet stores. Some of the local pet stores that don't carry herps will also let me post adds up on their windows or bulliton boards. You can also do newspaper ads. Just a few suggestions.