Goodbye Litespeed, hello Nginx, says Wordpress.com « Blue Screen Of Duds
fatalerror.wordpress.com/2008/04/14/goodbye-litespeed-hello-nginx-wordpresscom
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Interesting that WordPress, entirely a PHP deal, has switched to nginx.