[chadyj]

My agency wrote a rails CMS called Atreides powering at least 20 sites with high traffic and recently open sourced it. It was very much inspired by Tumblr's simplicity but adds a lot of flexibility particularly with images, videos, social components, analytics, and mixed media content creation. http://the88.github.com/Atreides/

[adriand]

Looks interesting. Just a quick tip, the <title> tag spells Atreides wrong.