Anna Debenham has a very concise and clear post about using “rel” to establish relationships between people on her blog. It was a Valentine’s Day post, but the infomation is good any time of the year.
This fantastic post by Pamela Wilson on Copyblogger should be reproduced and used in every beginning web design class. It’s called The Essentials of Human Web Design.
NIcholas Zakas looks at the HTML5 and JavaScript that goes into Gmail’s attachment feature in Dissecting Gmail’s Email Attachments.