I just added a new feature to my blog. It's the Lijit Search widget (or wijit, as they called it). It'll display the search terms that people used to find this site, as well as where in the world people are coming from. You can also search my blog with Lijit, and if you click on "Surprise Me" it'll bring you to a random post.
They say it may take some time before the widget is really effective, because it takes time to collect all the data about all my posts.