I don't know, I am personally pretty confident that my MBP isn't going to have any hardware issues, and if it does, that Apple won't notice anything was opened up and I'll be fine. Really, almost any issue besides total logic board failure is user-serviceable, right? So I should be able to fix it myself. If the logic board for some reason kills itself, and apple doesn't want to fix it, I'm probably going to end up just replacing the entire laptop (I hear it's like a thousand dollars to replace a logic board?). Anyway, I'm not worried about any of this warranty voiding stuff. I actually can't recall ever needing to use a warranty on anything. I've always fixed it myself or just replaced it.