More on recording with your iPod

Via Engadget , news that XtremeMac has announced something called the MicroMemo, which

consists of an adapter with a built-in (bur removable) flexible mic, and records 16-bit audio from 5G iPods at 22 KHz. It's powered by the iPod and will cost $79.95 when it ships later this year.

One question: why 22KHz? Why not the take advantage of the iPod's full capabilities? We already know it can do 16 bit/44.1 KHz/stereo. Anyway, here's a link to the MicroMemo product page.