For what it's worth, if you're interested in a cheap NAS device, check the Hawking Tech HNAS1 w/o drives. I got one for under $90. If you're just interested in hacking Snaps, well carry on. There's a flurry inexpensive nas devices on the horizon thanks to the Broadcom "NAS on a chip" product.
Read about it here...
http://www.broadcom.com/press/release.php?id=500138