As shipping computer hardware around North America and Europe works best when done within their respective Zones, perhaps we could split this board into North America and Europe and "International"? I think very few people will be doing trans-atlantic trades, especially for larger ticket items that can spend weeks sitting in customs or getting taxed some ridiculous import duty. At the moment there isn't a way to sort for North America or European sellers/buyers and it wastes time having to check every post to see where they are located first.
I'm in Europe and have sold and shipped various things to North America without problems so far. Splinting the board would make it harder for me to sell GPUs to Americans, or buy Cigars from Koreans. Sure there is a delay for cross-globe shipping and on heavy boxes it's an expensive process but that's all factored in in the sale price.
Things spending weeks sitting in customs is exceptional, years ago when I worked for DHL we had a project called CIA ( Clearance In the Air ) where entire planes full of cargo were customs cleared before they even landed. Customs reserve the right to check any package but in practice unless they have some reason to suspect the sender, delivery address, or a sniffer dog starts barking at your package there is no additional delay caused by customs.
How about the simpler approach of having standard tags on the messages. Something like:
<Sale/Buy>-<Country or region trader is in>-<Optional country or region trader is willing to trade with, assumed Worldwide unless specified otherwise>
eg.
[WTS-Europe]
[WTS-Spain-Europe]
[WTB-US]
[WTB-US-US/Canada]
[WTB-Australia-Asia]
I'd support splitting the board into people wanting to buy and people wanting to sell.
