We launched TheFix.com on Pantheon, very early on (eight months ago), and have been really happy with the platform. Pantheon costs them about 20% of the server cluster we would otherwise have recommended.<p>This is an bigger deal, from a tech perspective, than the TC story implies. Automating Drupal hosting and really solving the developer workflow is a real feat. Most of what Rails or Django has in config files or framework-driven build scripts is stored in the database. This makes staging and deployment kind of a pain.