Steve Holden from TechNewsRadio.com highlights some interesting backend infrastructure configurations from an interview done on the Gadget Show Podcast with Richard Giles. The interview was with the Vice President of Product Development of SecondLife - Cory Ondrejka.
I thought the details on clustered Linux using Debian was interesting. [NOTE: When I originally recorded this I mentioned the incorrect game Half-Life vice the correct game title Second Life. Sorry about my error.]