I am a geek who subscribed there to have fun. Some people do gaming, some poeple do chatting, and I do code. I can answer a lot of questions, but I prefer strange and challenging problems in PHP, Symfony and/or MySQL.
About opensource, I developed twigfiddle.com, a website that provides a small development environment to develop, run, store and access Twig code online, and domajax.com, a jquery plugin built to make ajax interactions easier and cleaner.
You'll find me the most on the php, twig, curl and gd tags.