This was my abstract, from the Unicode conference program for my talk:

A practical look at the language and locale capabilities of Joomla! and Drupal, two leading free software content management systems (CMSs). They let you build more powerful, more international websites faster. We look at: their core services for internationalisation and locale support; localisation of UI and content; and localisation support in some leading modules. You will leave with specific tips for building your own site. We don't assume Joomla or Drupal experience, but do include material for advanced practioners. A good tutorial for web site product managers, for web designers and developers, and for managers of international web site teams.