Найден
пример в текущей спецификации HTML5, который косвенно указывает на возможность такой верстки:
<footer>
<nav>
<section>
<h1>Articles</h1>
<p><img src="somersaults.jpeg" alt=""> Go to the gym with
our somersaults class! Our teacher Jim takes you through the paces
in this two-part article. <a href="articles/somersaults/1">Part
1</a> · <a href="articles/somersaults/1">Part 2</a></p>
<p><img src="kindplus.jpeg"> Tired of walking on the edge of
a clif<!-- sic -->? Our guest writer Lara shows you how to bumble
your way through the bars. <a href="articles/kindplus/1">Read
more...</a></p>
<p><img src="crisps.jpeg"> The chips are down, now all
that's left is a potato. What can you do with it? <a
href="articles/crisps/1">Read more...</a></p>
</section>
<ul>
<li> <a href="/about">About us...</a>
<li> <a href="/feedback">Send feedback!</a>
<li> <a href="/sitemap">Sitemap</a>
</ul>
</nav>
<p><small>Copyright © 2015 The Snacker —
<a href="/tos">Terms of Service</a></small></p>
</footer>
Тут речь идет об элементе
footer
; семантически, он имеет смысл, практически аналогичный элементу
header
.