Yelp: A Poster Child For Semantic Markup

Search Engine Land.com:
Yelp…is…essentially a poster-child for semantic markup. This spring, Google’s introduction of rich snippets has allowed Yelp’s listings in the SERPs to stand out more, attracting consumers to click more due to the “bling” decorating the listings in the form of the star ratings.
There are now some very good reasons why sites with ratings [...]

WordPress Strips Classnames, And How To Fix It

WordPress 2.0 introduced some sophisticated HTML inspecting and de-linting courtesy of kses.
kses is an HTML/XHTML filter written in PHP. It removes all unwanted HTML elements and attributes, and it also does several checks on attribute values. kses can be used to avoid Cross-Site Scripting (XSS), Buffer Overflows and Denial of Service attacks.
It’s a good addition, [...]

why not?

does anybody know a way make a reverse-ordered — think countdown — ordered list without resorting to non-semantic (though ingenious) css tricks?
ordered list, lists, html, semantic markup