Hi, Thank you Jakob for added me on this page http://meta.wikimedia.org/wiki/Research, I will try to get some information on it. Normally I will finish the redaction of the first and little part of my work till middle february. Mainly in french but I will translate it in English too. Thank also for the link download.mediawiki.org, I take (firstly) the french Wikipedia, cause 80G whoa !! I understand now why France is a little bit in late for the IT society :/ But I have still a problem. Ok I have the articles and all history of them in the database, but I don't see the "User:" pages. Maybe it's not the same with en.wikipedia. Does it really contains the user pages? If this is not the case, can we have access to these datas without being connected? One more time ... thank you for your enthousiasm. Julien Levrel