Next year we
should switch the wiki to read-only mode for 48 hours and
take the opportunity to clean up the database schema a bit. Remember
it's not just admins messing with articles, there's plenty of
anonymous users too, and not all of them are careful to clean up the
next day.
-- Tim Starling
Come on - I thought the principle was to stay open for business.
Not at all. Didn't you know the internet closes for cleaning on April 1?