I believe that roundedline is the admin here so here's a suggestion for you:
In the "Parts Message Board" section of this forum, why not divide folks from the USA and Canada into distinctive sections?
From there (let's say for example Canada) we can post parts to buy/sell/trade by starting our topic by the name of the province (for USA , the name of the State)
Example : WTB: ALBERTA : Fenders for Silverado
or could be
WTT: MICHIGAN: Big Block 454 for any 6.2 diesel.
That way, we could head for the right section in our own country/area.
You got the idea now.
I dunno how many members lives in Canada.
Just a thought it's up to you.
Also, i noticed that some members don't mention where they live so it could be frustrating to see a part you would buy/sell/trade and finally you cannot do it because of the huge distance between each other.
Just a suggestion to make it easier and friendly :)