The Madison Children's Museum mobile website offers a refined version of the main site. It is easy to navigate and gives just the information most people are looking for.

I wrote the entire mobile site and CMS myself in about 18 hours as a project for Goodstock 2010. The mobile site is no longer active for some reason.

Wordpress

WordPress is an open source Content Management System (CMS), often used as a blog publishing application, powered by PHP and MySQL. It has many features including a plug-in architecture and a template system. Used by over 12% of the 1,000,000 biggest websites, WordPress is the most popular CMS in use today.