I was looking for a portable external drive to use as a Time Machine backup for my MacBook, but thought it might be less expensive and easier to just get a NAS drive instead. I normally use my MacBook at home and only take it out when I go visit family every couple of months or so. The only problem I can see using a NAS is it's at home, so if the place burns down or something, there goes my backup. Although, my old TM drive was sitting at home on the counter or end table anyway. And just to make sure, TM can backup to a NAS drive? It would be connected to a Linksys router via ethernet.