In my mind, code in magazines and on the Net is always 'buyer beware'. Code in shrink wrap is no better, but at least with open source, you have a choice. As a programmer, you have an *informed* choice. Certainly the 'use x & y' mantra is oft enough repeated around here that anybody beyond the Rabbit-book level is educated enough to be aware of what those pragmas can do for you, if not necessarily what they can do _to_ you.
I've written for print mags and online before, and I always distill my code down to the essence because if I don't, the editor will take a meataxe to it. The point made upthread about explaining the omission is a great one; I'll add a para to my future texts about that because I'm always out to educate future proggies to give them a chance to become better than me...