I remember vaguely we tried some sort of "wikipedia newspaper" some time ago, but it didn't work. Today I saw a similar attempt on the German 'pedia, where you should add today's date each day on a special page and write about current events from the news.
This might actually work on wikipedia.com, if we'd automatically add a link to "today" (like [[2002-03-22]]) in the sidebar. It would draw attention and remind people there's something they might want to write about. That way, we'd get at least links to many current topics, and on wikipedia, links tend to turn into articles ;)
Might be worth a try, another link in the sidebar is a small price to pay.
Magnus