Khshayarsha
Shahanshah
I conquered all the way down to the southern tundra end of my continent (wiping out a couple other civs along the way). I left the southern cape desolate so that barbarians would periodically spawn and I could go and grab their gold. Yeah, I'm essentially running a barbarian farm. 
But it seems I have to park my units out of sight of the barbarian spawning grounds. As long as they're lit up with unit-vision, the barbarians refuse to make an appearance.
The Persians who live way at the other end of the continent get wind of barbarian spawn before I find out--I don't know how they find out about it so fast--and before I know it, they're moving massive columns of units all the way through my territory (we have ROP). Man, does that ever slow down the turns, waiting for all of them to file past! Such an excessive amount of firepower for one measly barbarian! So I'm going to settle a city there, pick up regular gold from the hills next to it, and forget about farming barbarians. I'm sick of all the unit transit through my territory.

But it seems I have to park my units out of sight of the barbarian spawning grounds. As long as they're lit up with unit-vision, the barbarians refuse to make an appearance.
The Persians who live way at the other end of the continent get wind of barbarian spawn before I find out--I don't know how they find out about it so fast--and before I know it, they're moving massive columns of units all the way through my territory (we have ROP). Man, does that ever slow down the turns, waiting for all of them to file past! Such an excessive amount of firepower for one measly barbarian! So I'm going to settle a city there, pick up regular gold from the hills next to it, and forget about farming barbarians. I'm sick of all the unit transit through my territory.