On the top of each Wikipedia article should be two things: The time
since each article was last edited and the average number of views
that article gets per day. This would form a rough system of
accountability for every article. For example, a page that hasn't
been edited in twenty days and gets over a hundred views per days
would be likely to contain fewer errors than a page that was last
edited three days ago and gets four views per day.
This way one could even come up with a simple heuristic combining the
two statistics so that editors could surf through articles looking
for the ones most likely to contain mistakes. One could also surf
through the articles least likely to contain mistakes as an
admittedly imperfect although useful way of finding articles to
nominate for 1.0. I know you can check all of the edits and their
dates through the edit history, but there is no easy way for the
average user to check how many views any given page gets. This could
potentially go a great way for increasing the amount of faith the
average population has in Wikipedia.
Also, I should mention this has been inspired by the recent
controversy involving the article by Al Fasoldt and the subsequent
discussion on this list and now slashdot.