AFAIK, section headers should be used sequentially, e.g. <section><h1>First level</h1><h2>Second level</h2> < p>Foobar</p><h2>Another second level header</h2>

AFAIK, section headers should be used sequentially, e.g. <section><h1>First level</h1><h2>Second level</h2> < p>Foobar</p><h2>Another second level header</h2> < p>Quux</p></section> (the space prevents HN from eating those tags). It also uses paragraphs and breaks to create white space. On line 284 it even wraps a break in a bold tag. Nice article, though.