We're fortunate to have a place where so many local buyers and local sellers find each other every day to exchange everything under the sun. With such a large collection of ads and users comes the chance that out-of-province scammers will try to ply their trade as they do on other sites around the world. Measures are regularly taken to tweak the classifieds and make them a more difficult place for scammers to exist, however its inevitable that some will sneak through from time to time. For that reason its important to know the signs of a scam. As I regularly make a habit of saying, if an inquiry is from someone who is unable or unwilling to meet in person to make the exchange (regardless of reason given) then it is strongly not recommended that one proceed. The classifieds are intended as a local service and it should be seen as an instant red flag if someone isn't conducting the transaction in person (shipping "agents" don't count), if they are asking for personal information such as bank account info, if they are sending you more money than you're asking for or if there is some reason that they are asking you to in stead send them money.
If you run into a suspected scam that you feel may have a different wrinkle to it that folks arent aware of from following the forums and reading the notices that are in various places throughout the site it's appreciated if it be reported through the Contact & Support link that's at the bottom of any page in the site. Reports are a huge part of evolving the system and are very much appreciated.
For more on safe practices when using the service please check out http://www.ebrandon.ca/classifieds.safety.aspx