Testing Comments on the Blog

I've added a comment system! I know it's an odd thing to do, since this is a fairly inactive blog, but that's also what makes it a safe testing ground. I've wanted a comment system ever since I switched to a static blog, but it's hard to find one that meets all my desiderata. It has to be hosted, but inexpensive--I don't want to figure out how to serve it myself, and I don't want to pay a lot of…