I copied an awesome, hard to find cache I found a hundred miles from home, but in the same state. When logging the original find I mentioned I would try one like it in my area.
I did place a similar hide, that I hoped was difficult, and mentioned in the write up that it was not my original idea, but copied from a cache I really enjoyed in the eastern part of the state. So the first guy to find it looked up my history of finds, figured out which cache I copied and deduced the "trick" of the hide from the original cache's logs.
He patted himself on the back for doing his research and using "deductive reasoning". I was a little ticked and changed the description for future cachers. It wasn't supposed to be a puzzle cache, just a tribute to a cool idea.