As many of you may know, neutral AH ninjaing (Buying those items for 1 copper being transferred across faction) has gotten quite popular recently. Many of you may have had it happen to you, you put up your item and before your friend can buy it, it is bought out by some a-hole in winterspring. Well one thing to remember is that proper AH ninjaing takes a lot of patience, which most ninja's don't have. Often people will resort to using bots to auto-buy everything less than 1 silver, because they are too lazy to look and see what they are buying every time. The lazy botter will not necessarily stay at their computer, and this is where you take advantage. So..
Step 1: find a lazy AH ninja that is buying all items < 1 silver(or whatever their threshold is)
Step 2: Fill your bags with "Rough Arrow"s
Step 3: Post said arrows in stacks of 1 with a buyout price just under the ninja's treshold
Step 4: Hope the ninja stays AFK for a long time, keep posting arrows as long as they keep buying them(you can mail yourself a bunch to make this easy)
Setp 5: Have a good laugh and take a few silvers profit.
edit: You will need a mailbox addon like postal to handle the endless mailbox spam.
enjoy.