Written back in 2001, but still mostly relevant to anyone interested in proper web typography.

W3C’s new unified validator that can check feeds, stylesheets and XHTML/HTML markup at once.

A hilarious, yet utterly serious page on w3.org stressing how important persistent URIs are.

Historical note: At the end of the 20th century when this was written, “cool” was an epithet of approval particularly among young, indicating trendiness, quality, or appropriateness. In the rush to stake our DNS territory involved the choice of domain name and URI path were sometimes directed more toward apparent “coolness” than toward usefulness or longevity. This note is an attempt to redirect the energy behind the quest for coolness.

Not just a “what’s my IP address” site – FindMeByIP.com shows all kinds of information about your browser, including support for HTML5 Forms and CSS3 selectors. An invaluable resource.

Good to see YouTube embracing upcoming standards. The official YouTube blog has more information.

The always interesting Friendly Bit blog has a list of techniques that don’t work in Internet Explorer 6 but do in IE7. Included in the post’s comments is a link to “When can I use…” a site that maintains browser compatibility tables for a host of upcoming web technologies.