Wikibooks

I came across some wikibooks to learn Chinese.

An extensive Grammar in German: http://de.wikibooks.org/wiki/Chinesische_Grammatik, some lessons in English: http://en.wikibooks.org/wiki/Chinese/ and some strange stuff in French: http://fr.wikibooks.org/wiki/Enseignement_du_chinois.

Is anyone around here involved in any of these? What are your impressions?

I am slightly baffled by some of it, e.g. the English lesson on measure words: http://en.wikibooks.org/wiki/Chinese/Lesson_5. This just a list of measure words, not a lesson.

Btw: I stumbled across a transliteration for John 约翰 Yuēhàn. 

@John (one of them): Is that how your name is actually transliterated in Chinese?