Not a new article. But this article was recently featured on the PHP Weekly newsletter. Coderoncode has a little how to on setting up Magento for HHVM. I don’t use Magento, but I know a lot of WordPress bloggers who do e-Commerce do. So if you have been enjoying the riveting series I’ve posted on HHVM for a really fast WordPress install, and you use Magento as well, give the article a looksee.