Our detectives are back with the following intel on this WordPress site
The site is using the Rosy Geller theme by Rafael Czerwinski .
We could identify 2 plugins (there might be more) - Yoast SEO and WP Super Cache
Theme für die Internetpräsenz von Rosy Geller
Improve your WordPress SEO: Write better content and have a fully optimized WordPress site using the Yoast SEO plugin.
A very fast caching engine for WordPress that produces static html files.