A joint initiative by Google, Microsoft and Yahoo.

This site provides a collection of schemas, i.e., html tags, that webmasters can use to markup their pages in ways recognized by major search providers. Search engines including Bing, Google and Yahoo! rely on this markup to improve the display of search results, making it easier for people to find the right web pages.

Works in Safari 4 and Google Chrome.

Specifically, a tutorial for making HTML5 enhanced themes for WordPress.

A new W3C Editor’s Draft. Video conferencing via HTML is a good idea – no need for external plugins. The same applies for all kinds of peripherals, not just webcams.