Swollen batteries are a serious issue and are usually replaced even OFF warranty by MANY other companies (logitech as an off the top of the head example), so this is not really any great feat offered exclusively by Apple.
LOGITECH:
http://forums.logitech.com/t5/Harmon.../416425/page/2Again for anyone with a swollen battery call into support and the battery will be replaced even out of warranty. We take swollen batteries very seriously. If it is too swollen to take out please do not force it and just call support. We will take care of you.




