It's PR, nothing more.
I had a long post refuting the point of all this, but someone with a lot more credibility than I did it years ago: http://www.schneier.com/crypto-gram-9812.html
Network isn't all that important to me, I intend to keep it close at hand, worst case I've got the airport extreme or whatever that supports USB storage. So it's $500 (tax write off reducing effective cost marginally) for a raid-5 (ish) device that doesn't force me to buy drives in sets of 3-4...
[First Post, can't for the life of me find search]
I'm looking into procuring a drobo drive. I picked up a DSLR just before Christmas (and a long overseas trip) and am really enjoying photography as a hobby, tragically my little mac book pro 80GB drive isn't going to last long, I've got an...