I think from my reading of the article that their use for the conference is merely the hook to report that the Danes are using Macs to manage their equivalent of the 911 system in Denmarknot just for security at the conferenceand that the Macs are much more efficient at managing the calls than the Windows systems used by neighboring nations.
Ah, right you are. That's comforting....
IMO, the Mini is the non-flashy, unsung hero of the Mac line. Simple, unassuming, unobtrusive... yet plenty powerful for most home users and many professionals.
My old PPC Mini is running Linux now, and the newer Intel model is dual-booted with Leopard and Windows7 (both of which do just fine)... It's really noticeable when I crank up one of the big towers -- noisy fans and hard drives. I love how quiet the Mini is. Someday if I build a multi-processor array, I'll do it with Minis. Cool little lumps of compute power... ;-)