I'm a fan of LC_MESSAGES=de_DE and localized web pages -- almost. Unfortunately, the wording of many translations in Debian often drives me nuts. This applies mostly to web pages and package descriptions. Apologies to all hard-working translators -- the percentage of good translations does not outweigh the "wtf" cases for me. Still, I didn't want to switch to English for all the web.

Rhonda pointed me to a Firefox ^W Iceweasel plugin: HeaderControl. Now *.debian.org is English for me (reading the constitution in German doesn't solve DAM problems anyway). Yay!