Wow. I suppose they didn't want to move the bulk of their servers because of their sunk costs in space, security, etc. ... but, yeah, I can see that getting a lot of attention.

And you implicitly bring up a point I've read about, that power and cooling are now the limiting factors in server spaces. Moore's Law plus the even faster doubling of disk platter capacity (as of late I've read it's doubling every year or so) has allowed us to pack rather a lot in rather small spaces.