Thanks, I wrote the interfacelab article. We (at the time I was the CTO for massify.com) evaluated a lot of different configurations and nginx+php-fpm+apc was

Thanks, I wrote the interfacelab article. We (at the time I was the CTO for massify.com) evaluated a lot of different configurations and nginx+php-fpm+apc was about the fastest we could get the site going. Glad the article was useful for you.