I found this on my alt last night: (Don't think its been posted yet)
In Northwestern Westfall, running along the cliff,
there is a lone windmill with a tiny shack at its base.
It is surrounded by 6-7 Defias mobs, levels 12-13.
What’s the catch?
They respawn immediately. Get the drift?
1) Grinding/Maxing new weapon proficiencies...
2) Leveling a toon (lvl 5-16)...and getting him rich, as well.
3) Farming Linen. ( Helpful if you need money or for your prof.)
4) Farming these nice little nets that occasionally drop.