Good idea, but mostly for finding products with 230V power supplies and convenient locations to buy from.
I think the forums should remain as is. We all gain from this diversity.
In fact I believe that the same Audiogon with some enhancements to separate components with different PSU and location would be welcome.
I agree; I just returned from Germany (to America) and was looking for a headphone amp and a tube power amp. It would be great to be able to just look at 220/230volt equipment. Plus, shipping within the EU is much easier than getting stuff from North America.