I think the whole Enterprise Passenger concept is a fanstastic direction for the Phusion guys. I've toyed with a lot of Ruby app servers, and Passenger stands alone in its ease of deployment and stability of configuration. It already feels more "enterprisy" than many other Ruby app servers. Please don't misinterpret this as me saying other Ruby app servers are bad, just that they're different. Passenger isn't just an app server, it's all the supporting details that make it easy to deploy and manage, which I really, really appreciate. I can't wait to become a paying customer.