Announced to the public last year by Facebook was HipHop, an open-source project that transforms PHP code into highly-optimized C++ and then uses the GCC C++ compiler to produce a native system binary. Facebook's original numbers showed that by using this transformer/compiler on their servers the CPU usage went down by about 50% and they were able to supply around 70% more traffic on existing resources since the PHP code is no longer being dynamically interpreted. Here's a look at Facebook's HipHop during some of our first tests.