[quote name='tangytangerine']No, like most other systems, it's on there to show if the system has been tampered with. GS doesn't take systems w/o warranty stickers to avoid getting back someone's half-assed mod attempt.[/QUOTE]
Well I bought a "refurbished" xbox 360 from Gamestop a year or more ago and there was no warranty sticker on it. When it got the RROD I ended up selling it on Ebay.