For those who don't know Marc-Andre he is an accomplished developer who created http://code.macournoyer.com/thin/ http://code.macournoyer.com/thin/ (used by big

For those who don't know Marc-Andre he is an accomplished developer who created http://code.macournoyer.com/thin/ http://code.macournoyer.com/thin/ (used by big sites like Heroku.com) and he also wrote http://createyourproglang.com/ http://createyourproglang.com/ which has sold over 500 copies.