-HipHop VM (HHVM) is a new open-source virtual machine designed for
-executing programs written in PHP. HHVM uses a just-in-time
-compilation approach to achieve superior performance while maintaining
-the flexibility that PHP developers are accustomed to. HipHop VM (and
-before it HPHPc) has realized > 5x increase in throughput for Facebook
-compared with Zend PHP 5.2.
-
-HipHop is most commonly run as a standalone server, replacing both
-Apache and mod_php.
+HHVM (aka the HipHop Virtual Machine) is a new open-source virtual
+machine designed for executing programs written in PHP. HHVM uses a
+just-in-time compilation approach to achieve superior performance
+while maintaining the flexibility that PHP developers are accustomed
+to. To date, HHVM (and its predecessor HPHPc before it) has realized
+over a 9x increase in web request throughput and over a 5x reduction
+in memory consumption for Facebook compared with the Zend PHP 5.2
+engine + APC.
+
+HHVM can be run as a standalone webserver (i.e. without the Apache
+webserver and the "mod_php" extension). HHVM can also be used together
+with a FastCGI-based webserver, and work is in progress to make HHVM
+work smoothly with Apache.