What really ticks my off is people who cannot even speak their native language. Germans have really let themselves go. You’ll hear biologists everywhere speak of DNA (even when conversing/writing in German). Only ten years ago, nobody would have thought of abbreviating “Desoxyribonukleinsäure” as D-N-A (instead, they used the perfectly sane “DNS”). It’s perfectly ridiculous and in my opinion, it betrays a very sloppy attitude (not only towards language, which is, to be fair, rather arbitrary). That said, languages exist to make ourselves understood. Why impose artificial, unnecessary limits? Using a language other than English in programming-related publications (that includes source code, obviously) only serves the confusion of languages.