Wheee.......I'm new to these kinds of thread. Reminds me of a motor oil thread on car forums. I would read & heed what "Skull One" has to say. From my understanding of batteries, it has the ring of truth. I know one thing: I've had my share of "i-devices" with Li-ion batteries, and they've always given good service beyond the warranty or AppleCare. And I do absolutely nothing special to "condition" or otherwise fluff up the battery. I just don't have time for that, and would probably quit using these things if I had to do it.
It should probably be re-emphasized: when the battery is deep-discharged periodically, it is strictly for the benefit of the iOS, teaching it the battery capacity at that point in its life, and has nothing to do with "exercising" or somehow making the battery work better.