Just over two years have passed since the Essjay scandal erupted on Wikipedia. Some of the most bizarre aspects of Wikipedia at that time were the strange head-in-the-sand attitudes of many WP editors. More than one editor remarked that the event was a "tempest in a teapot" that would soon go away... this, at the same time that the scandal was being reported widely in the media, from CNN to ABC. It felt like Wikipedia bizarro-land. Not only were there many editors pretending the event never happened (or, alternately, that it didn't matter), there were even editors who were hostile to the suggestion of fact-checking the edits that Essjay had made while using his theology persona.
Two years later, Wikipedia has never fully recovered from the Essjay thing, judging by the creation rate of new articles and the attrition of long-time editors. It's possible many WP editors have either forgotten the event, or never knew it happened. But the Essjay scandal is still brought up when media talks about the inherent problems with Wikipedia.
One of the things that drew me to WR was being able to talk about the issue without head-in-the-sand commentary from editors so vested in Wikipedia that a simple "we need to check his edits" comment was viewed as "hostile to the project" (when in reality, any sane editor would want to check for those sorts of problems after finding out about false credentials being used in content disputes in articles).
In the two years since Essjay, what has Wikipedia learned? What measures has the site put into place to prevent future "Essjays" from using false credentials in content disputes? I know there was talk (from Jimbo Wales) about vetting identities, but that was quickly rejected by the community. What other ways is Wikipedia preventing the same abuses from recurring?
(I've posted this to "General discussion", as I felt it dealt with bigger issues than just Essjay; feel free to move as needed)