Maybe others were aware of this, but I was not. Starting in 2007, the Law Library of Congress began archiving blawgs:
I went in expecting to find only things like the Harvard International Law Journal (which I did), but I was also pleasantly surprised to find regular blogs, such as China Law Blog, Simple Justice, The Trademark Blog, and others included. There are even a couple Canadian blogs included as well. It’s a nice resource when/if some legal bloggers decided to hang up their hats.