I have a created a content type "person", added to it custom field "country". I have downloaded the "countries" module and installed it.
I would like to categorize "person" nodes by countries, i.e. by clicking on the person's country, I could see all persons who live in the same country.
I don't think taxonomy could do the trick since I will have to add around 140 vocabulary terms also, node reference seems not to work properly...