As someone who subscribes to ArchiveTeam's philosophy, it's going to be a dark day when the time comes to scrape Facebook before it goes under with that much data behind the scenes.
Yeah, right. How and who exactly would they hand that over to, given that there are privacy settings on the photos that people expect to have respected?
I had a hard drive crash on me with all of my photos some years back and my "backup" strategy failed. Dumping a myspace backup got me some of my most precious photos back. Thanks MySpace!