BelievePHP
Tags: facebook Destination: http://royal.pingdom.com/2010/06/18/the-software-behind-facebook/
Destination: http://schlueters.de/blog/archives/136-15-years-of-PHP.html
Tags: challenge Destination: http://www.toughestdeveloperpuzzleever.com/begin/
"The term 'free software' is sometimes misunderstood -- it has nothing to do with price. It is about freedom."