Naver, a major Korean website, has its own MT service called Papago [1] which rivals Google translate for supported language pairs. One day it started to translate a URL to Amazon German to an email address of my friend, who is a member of the KDE localization team and presumably his address made into the bilingual corpus Papago used. It took him years and also a governmental intervention to realize the origin of mysterious emails and sort the whole thing out.

[1] https://papago.naver.com/