Finally found where to do this, on the account/site preferences page. So this is a blanket setting for all listings... now I assume that it will be applied automatically, or NOT, depending on what countries I choose for individual listings? I mean, some things I'm willing to ship overseas, & some not, so am I right in thinking that if I choose Canada/USA/Worldwide under shipping options, that no one will be blocked, but if for example I removed worldwide & just posted rates for Canada & USA for another item, that overseas bidders would be blocked, but only for that specific item & not for the first case?
... confusing question; just want to make sure I understand how this works.
Thanks.