I’m not a WP user, and I don’t want to ruffle feathers, but I can read and I think WP .com might not be getting the credit it deserves for contributing 4000+ hrs/year to WP development. Some of the contributors to WP are the very best open source developers out there; they look at kernel performance, image encoding corner cases and php, and land fixes. Not sure if Mullenweg is communicating that as clearly as he could, but it’s true. Without contributions like that, I doubt WP would be as well known as it is.