Hello. I don't know where I could post a feature request, but I had this idea and I found it would be a great addition to Drupal. I would like to see new attributes for taxonomy terms and vocabularies that would allow a taxonomy to define the language for the site or the theme currently displaying. For instance, in a vocabulary named "Language", a term called "Portuguese" would change locale to Portuguese and, possibly, the theme.
Another idea is to have a special read-only taxonomy setting that mirrors the current user list. So that user nodes can be browsed just like a blog, but I could, for instance, keep smaller blogs separated by language. So taxonomy path like this: http://www.site.org/taxonomy/page/and/1,10 could be used to browse every node created by user number 10 in language number 1.
What do you think? :)