I find it odd that on the one hand, this site is about following standards and best practices, but at the same time violates some other fundamental web standards.

For instance, instead of using a well-established example domain name like example.com [1], they misuse the existing domain yourdomain.com which currently belongs to Neon Network LLC.

[1] see RFC 2606, http://tools.ietf.org/html/rfc2606