Attention reference-guide addicts! My genius husband’s company, Small Batch Inc., just built an awesome tool called Wikirank, and you should go play with it. Wikirank shows you which Wikipedia topics are the most popular, and which ones are seeing the most action on a particular day.
It also lets you compare topics against one another and embed pretty graphs on your Internet website, like so:
As you can see, monkeys are kicking robot ass, but ninjas are still a contender. I feel smarter already.