Yahoo! used symfony to redevelop another project. This time symfony was used as part of the foundation for Yahoo! Answers. Yahoo! Answers is the largest collection of human knowledge on the Web with more than 135 million users and 515 million answers worldwide. Yahoo! Answers is the 2nd ranked education & reference site on the web and is available in 26 markets and 12 languages.

The post shares some of the thoughts behind the move including their philosophy, the design of the project and a link to a presentation given on the update.