Oh hell, I'll do it. Let's say $2 CPM (that's low according to http://www.sitepoint.com/article/introducing-google-adsense), on 7 billion page views per month (http://www.webpronews.com/blogtalk/2007/06/12/wikipedia-wikimedia-traffic). That's $14 million a month, which would mean roughly $7 million from two weeks of ads.
That website is 4 years old. Are returns from ads still that good? I thought they had dropped significantly over the last few years.