My understanding was this is NOT hidden city ticketing. Hidden city ticketing is when you let's say want to go to Cleveland, so you find a flight from pittsburgh to los angeles or something, which just so happens to have a stopover in cleveland, and it just so happens that that flight is for some reason cheaper than a stam flight from pittsburgh to cleveland. What I posted about seems to be some shtick about changing the location of your search itself, so that for example you pretend you're columbian, get a rate in their currency, and the math works out that the fare is way cheaper than if you searched it as an american. I don't recollect Dan every mentioning this before.
I also don't know how to do it, so if anybody does / has heard of this, that would be cool.