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LOL! This is a funny thread.
I would agree, however, that documentation is lacking for many (most?) modules.
I would also say, though, that writing good documentation is just as hard as writing the modules, and few people have both sets of skills.
In the end, bad docs are probably better than no docs. And docs can't help but give your module a wider audience, which should be a motivation for some module devs.
As for the language, hey, write it in whatever you can, there are rudimentary translation engines on the 'net, and my unscientific opinion is that most people, at least outside the US, speak at least a bit of another language besides English.
For instance, here in Canada it's actually the law that we speak in English and then in French when talking in public. (Unless you're in Quebec, where bill 101 mandates that you have to talk in French first, and then you must use a quieter voice when talking in English.)
Thanks for reading, a bientot,
--Julian