How do you i18n?

[eluser]boldewyn[/eluser]
My line of thought is, that the selection of language has (ideally) nothing to do with routing to a specific content, therefore I do it at the CI_URI stage.

With "ideally" I mean, that on my site every page exists in every available language. Then a MY_URI class takes over URI handling, excerpts the language as being the first part of the uri_string, negotiates language w/ browser, if it's missing or not conforming and hands over a stripped version of the URI to the routing. It also saves the found language in the config for use with gettext.

Inside my application I use gettext (or, because PHP's gettext is horrible, <http://savannah.nongnu.org/projects/php-gettext/>).

Any comments about this way? I'd be glad to hear.