Ultra-portable laptop backup solution

Carrying around an external USB drive or even a thumb drive for making backups of your laptop is now officially antiquated. SanDisk has a new product coming out that combines a SD card reader for an expresscard slot (the new, smaller PC Card, formerly known as PCMCIA) and some backup software to provide local backups when up pop a card in the slot. Of course, a number of laptops already have SD slots in them, so this isn't completely new or groundbreaking, but it is pretty affordable ($39.99 MSRP, plus the SD card) for the adapter and the software.

They keep getting smaller; try not to lose your backups now that they are the size of a postage stamp.