Dan Cederholm over at SimpleBits started a bit of a feeding frenzy when he posted his SimpleQuiz - a collection of questions about preferred markup technique. He's now gathered them all together and picked out some of the more notable comments. You might also like to take a look at some of the pieces that inspired the quiz, in particular Standards don't necessarily have anything to do with being semantically correct, which explains how coding pages in standards compliant XHTML does not necessarily make them semantically useful, and, more specifically, Tantek Celik's A Touch of Class, a must see for gratuitous class attribute users (and reforming ones like my good self).
And in other news
Today I'm only slightly off topic, with this piece from the Vocabula Review: Singular They: The Pronoun That Came in from the Cold, which points out, among other interesting things, that the practice of using "they" as a gender-free third-person singular pronoun, as opposed to "he", is a lot older than you might think.