Hi!
I'm new to wikipedia, and I think that it is a great project that can help to extend the ideas of free software to other areas, and to non technical people.
I don't want to start a flame war but I want to express my point of view on the way that articles are edited in wikipedia.
I've contributed with some articles. I'm rather disapointed, though. For example, I've rewriten the article on Lebesgue integration in the English wikipedia, since I find that the article explained the tenichal difficulties of Riemman integral, but it does not define the notion of Lebesgue integral (perhaps I had to tell you that I'm a mathematician, I work at the mathematics department of Buenos Aires University, Argentina).
After that, looking at the history of the page, I find that some rather old previous versions where much better, but they had been deleted since a user consider them "too advanced". Needless to say, Lebesgue integration is indeed an advanced topic in mathematics, so that any article on this subject is necesarilly advanced (or does not covered the topic).
It seems to me that the model of wikipedia is too much open, so that open that anyone can annonymously edit any page. That I think is to much.that at least one should have to register and log in in order to modify a page, one has to take a responsability for what is saying (specially for deleting some one else work). In the current model, we don't know who write what (even though, most civilizated wiikipedians do log in, but I think this should be mandatory)
Another idea that comes to my mind is that there could be some teams for especific topics, that manage the pages in some section (say mathematics, geogrpahy, economics or whatever). This does not mean that any user from outside the team could not submit modifications. But without a team of core developers or a project leader for each section how can you assure a minimum of quality of wikipedia? (this is more or less the model in all free software projects, no project grants write access to cvs to everyone anonymously, say)
Best regards, Pablo De Nápoli