i was sitting with my powerbook on my bed, and bumped into the shuffle which was charging. bam, it split off, dangling from the usb port.
the usb wire kept it together and i snapped it back into place.
now i'm backing up teh data. if it stops working, i'll get a free replacment this week.
so get an iPod shuffle dock or a USB extension cable or be more careful. this thing is plastic and very breakable. not very impressed. but it's also my fault.