Maybe they don't need one? This is a page that is easily crawled and is in the top 3 for searches for "sitemap" on Google.

If it ain't broke...

There's no requirement for the sitemap to be at /sitemap.xml, or even to be named "sitemap.xml". They may have one, but since the norm is to submit them directly to a search engine (thanks for nothing, Google), sitemaps aren't typically automatically discoverable.

It's not that ironic. Sitemaps are an "easy way for webmasters to inform search engines about pages on their sites." Hardly a requirement for a simple site.

There is also no robots.txt - http://www.sitemaps.org/robots.txt

Who said that sitemap.xml is always in that location? If it is not specified in robots.txt then they don't want you to know about it in case it exists.

Irony: HTML5 Boilerplate site does not use HTML5 Boilerplate or HTML5 in general. (nav, header, footer, etc...)

yeah it does..

https://twitter.com/#!/h5bp/status/55022617471623168 (this is actually directed to you)

The 2nd tweet you reference is incorrect, view the source of h5bp.com and you'll clearly see that it's using HTML5 Boilerplate

Also, if you take a look at h5bp you'll notice <header> and <footer> elements in index.html

https://github.com/paulirish/html5-boilerplate/blob/master/i...

That's the boilerplate. I'm talking about the actual site.

boilerplate is what you start with, not what you publish

what's the big deal

Wow, that's really surprising. Especially given my perception of the quality of HTML5BP.