This is so incredibly useful! The terminology in here is (to my knowledge) not gathered anywhere on the website. I've always been deeply curious about this kind of vocabulary, and although I don't travel often, I interact with a lot of guys who know these languages and it's fun to confidently flirt in their native tongue. My only complaint is that the authors pushed hard for a standard set of words in each language, which occasionally encountered a hiccup where that word/phrase wasn't really in use in a given language. I also would have appreciated a note or two about how to distinguish all the derogatory terms and swear words from one another.