This is still at an early stage, but is being used in real apps (including this one), I'd welcome any feedback on it. It's intended to marry some of the attraction of a simple to use CMS like wordpress, with the flexibility of rails for building new apps quickly (even complex ones). I got tired of building the same building blocks again and again in various languages but disliked most of the current offerings.
It is more at the stage where tinkerers and those building sites in golang will be interested, rather than end users. If anyone has comments or questions on the setup, I'd be happy to field them here. It's intended to be a CMS which eventually rivals something like Wordpress for ease of use/themes etc, but to be significantly easier to extend (more like rails in that sense).