Even though the second largest calibre user group is that of users from Germany, the devs didnt care to include support for german (social) metadata fetching. It took me 5 minutes to hack together the necessary plugin - shame on you.
I hope your excuse is, that you are working hard to make calibre faster. I just converted Jonathan Franzen's "Freedom" from epub to mobi which took
ridiculously 9 Minutes!
Kindlegen, though converted it in 15 seconds! Fukn python bloat
Für alle die gerne deutsche Beschreibungen der Bücher in Calibre möchten, habe ich ein Plugin geschrieben. Zip-Datei runterladen und in den Einstellungen aktivieren. Das originale englischsprachige Amazon Plugin sollte deaktiviert werden.