Wikipedia is great as long you are not part of its community. As long as one uses it just as a reference point or information source and does not try to edit it, wikipedia is fantastic!
What happens when one starts to edit this free encyclopedia is that one is bound to read its guidelines, rules, policies, come in contact with friendly or not so friendly users who help one out and becomes part of a community. I have met some great individuals through it.
Wikipedia owes its success to its freedom. Anyone can edit it, that means you and me and anyone can contribute in various ways, through personal research, ideas, suggestions, medias and translations. And thats what made wikipedia so great in so little time.
Unfortunately, no matter what the wikipedia slogan wants to declare, nothing is free in this life and wiki has to pay a big price for all its positive aspects. The price is a chaotic community, chaotic discussions, inaccurate information and insults. "Anyone can edit" means that anyone can use its pages for promoting hatred and insulting people. And that is a major matter where the greek wiki let me down. The admins inability of recognizing insulting content and removing it, makes me believe that even greater things are about to be tolerated in the same way, making wiki not trustworthy and unreliable. And that is not the wiki I want to be part of.
I came across a wiki-userpage of a very clever individual who describes the problems of wiki in a brilliant way. As he pointed out in an email to me
"I do feel that Wiki has a lot to offer and a lot of useful information; I also feel that Wiki is hitting a point where the original policies no longer work; a new set of policies need to be implemented or Wiki will degenerate in to the morass that Usenet is."
His userpage and blog with some interesting entries. Read this one, this one and this one.