Being backed by Rackspace, NASA, Dell, Citrix, Cisco, Canonical and over 50 other organizations make this a force to be reckoned with... and two of my current favorites of Rackspace and Canonical... and given I run nothing but Dell (servers, desktops and laptops) at home with a mix of XP, Vista and Ubuntu, I'd have to say Dell could be considered a favourite as well. I digress. OpenStack is going to provide the freedom to move your applications around with relative ease, if your an IT shop with Internet facing applications / servers I'd strongly suggest you start becoming aware of OpenStack and where available, playing in this architecture for building apps and sites.
