Sketchpad – Online Paint/Drawing application
Who says you need flash to create cool yet useful applications. Built using <canvas>.
Author: Todd Austin
Optimizing HTML
A great post on why and how you should optimize your html.
“we’ll take a look at HTML optimization: removing some of the common markup smells; reducing document size by getting rid of redundant structures, and employing minification techniques.”
Also, if you are interested in HTML5 take time to read Dive Into HTML5 and HTML5 Doctor