If you are on the keyword screen, there will be 2 dropdown boxes above the keywords. By default the one on the left says keyword and the one on the right says none, change the one on the right to region and it will show you the country.
They also follow everything they say and type with "eh" -- like: "Hey, I really like your site eh!" or..."Really tough making a sale in this economy eh?".
They also seem to love searching for things related to the weather for some reason -- dead give away.