The site makes great reading not only for the statistically minded.
The search trends are extremely interesting, linked it would seem, to world events
Wikirank shows you what people are reading on Wikipedia. It’s based on the actual usage data from the Wikipedia servers, which the Wikimedia foundation makes available as a public service. We take that data, process it, and give it back to you in a format that’s easy to use and share. Wikirank reveals emerging trends, and lets you embed relevant charts in blog posts and on social media sites.
http://wikirank.com/
http://wikirank.com/about/