At the bottom of the sidebar, you’ll find a list of the latest referrers to this site. As I didn’t want the nasty little table it puts the results in by default, I modified the stylesheet.
I’ve played about with blogdex a bit (I’ve added a link to that on the right too). I had fun with the social network explorer (even though it doesn’t work for my site – I suspect the server was down last time it was crawled). See for example:
Get the idea? Have fun! And if your weblog isn’t indexed by blogdex yet, send them a note…