“Blogs that link here” – where did this come from?

I’ve added a few things to my sidebar recently: graphics for Blogstreet, Blogorama, a Sitemeter graphic, etc. But today, something myteriously showed up at the bottom of my sidebar that I cannot find in my sidebar template: a line of HTML that says “Blogs that link here,” followed by a Technorati graphic. I did register my blog with Technorati, but why is this stuff showing up here? And how do I remove it?

Thanks!

My blog is here.