HTML5 logo: W3C takes a step in the right direction - The Web Standards Project
"Not having a version number will make it really hard to educate people about the current set of new HTML features, and how they differ from the old version (which rather contradicts the purpose of the HTML5 logo in the first place)."
HTML5 Accessibility Challenges | The Paciello Group Blog
"For example, Firefox and Webkit currently have differing ways of providing labels for form controls when using text from the HTML5 placeholder attribute, this divergence will cause issues for both users and authors as there is no clear way to provide a text label that will be uniformly presented to users regardless of browser."
Opera's Developer Relations Team - Autoplay, go away!
"Until Opera has a "never autoplay media" option in the configuration settings (soon!), you may wish to use this tiny Opera Extension Autoplay, Go Away! by Daniel Davis, Philip Jägenstedt, Bruce Lawson and Simon Pieters."
W3C Internationalization (I18n) Activity - An Opera extension for the multilingual Web
"HTML has provided markup to make this clear (rel="alternate" hreflang="xx" as attributes to a link) for more than a decade, but this has not been implemented in browsers, which makes it hard for users to discover."
Microformats and RDFa deployment across the Web ? Tripletalk
"The data shows that the usage of RDFa has increased 510% between March, 2009 and October, 2010, from 0.6% of webpages to 3.6% of webpages (or 430 million webpages in our sample of 12 billion)."