QUOTE
In my own estimation, the end of Wikipedia came with the use of IRC channels. The moment there was an "3leets" group or a place where decisions were made that were not recorded or portable over to more open media, the underlying principle of the project was gone. More to the point, though, it exacerbated every other problem.
Have to admit that Geogre's statement about the rise of IRC uses is right. Gone is transparency. Everything happens on one IRC or another, not visible to most editors.