This is Simplish, a theme for the WordPress personal publishing platform.
Generated markup is valid XHTML 1.0 Transitional.
Since The WordPress galleries generate invalid code, Simplish implements its own galleries, in valid XHMTL. Simplish uses valid CSS 2.1. hAtom and hCard validation and transformation works – try it with the hCard Validator @ geekhood, or the microformatic hAtom transformer.
Sample posts showing formatting specifics are below, and this post is updated and re-dated from time to time.
Last but not least, the comments on this post show the new threaded discussions in WordPress versions greater than 2.7 and supported by Simplish.