Stop! You are doing mobile wrong! | Metal Toad Media
An excellent summation of the responsive enhancement approach to web development.
Link archive: October 22nd, 2010
Never finished, rarely simple - Preoccupations
An excellent overview of the evolution of the St. Paul's School website from David Smith, noting an increasing emphasis on mobile usage.
Welcome to Open Library! (Open Library)
One web page for every book. I love this project.
Create a new Fiddle - jsFiddle - Online Editor for the Web (JavaScript, MooTools, jQuery, Prototype, YUI, Glow and Dojo, HTML, CSS)
This looks like it could be a handy little tool for creating test cases with HTML, CSS and JavaScript.
Mobile Web Application Best Practices
This W3C document is done and dusted: proposed recommendation. Every one of the guidelines for optimising for mobile also holds true for "desktop" sites.