Outlands farming is mostly dead, since everybody has moved on to Northrend to farm the items required for trade skills / spells etc.
However, you can still make a fortune from farming Arakkoa feathers, since they're needed for the popular Knothide Quiver (requires 30 Arakkoa feathers). I recently sold 100 feathers for about 160 gold - that works out to 1.6 gold a feather!!. The listing price on the AH is very low, so you can also try to sell them for as much as 2 gold a feather!
The best two farming locations are at the circled points, since they're close to Shattrath city (get a mage portal there).
I farmed them as a mage and found it very easy to take them down (3 hits max). Feathers dropped up to 3 at once, and I probably got a drop from every 3rd mob.
This might seem like it's only an average farming spot, but since they're humanoids they also drop Netherweave Cloth!! The price might have come down but on my server it still commands quite a decent price for a stack (5 gold).
When you combine the cloth sales with the feathers and the 20-odd silver a drop, this is quite a nice farming spot!!