if you want to farm for quick gold only without farming rare gear, 
you only need to buy cheap gear with very high gold find %, but you must keep ur dps at 10k above

this is how I farm

http://forum.lowyat.net/index.php?showtopi...post&p=53345197

speed farm in nightmare with very high GF is faster and better than in Hell

(because it takes longer, harder to kill, similiar gold loot in hell, may die with gear set focus on high GF)
if you already got good stat gears with GF/MF that makes you strong enough to kill fast in Hell, then you can just farm in Hell instead,

my way to farm is for those who doesnt have good stats gear with GF,  and looking for cheap high GF gear