I don't consider it cheating if it's built into the game. Yeah, the finger point in FFI, attacking your own guys in FFII, duplicating weapons and shields in battle in FFIV, using W-Item to duplicate items in FFVII and such isn't a planned part or effect of the game, but I figure if it's there and I'm not using any outside influences (like a game genie) to modify the game, then it's kosher.