What happens to the blog when the blogger dies? Are blogs eternal?

Dave Goldman writes: Sean Healy created a blog at unknowncolumn.blogspot.com and posted defamatory content about speedskater Shani Davis' mom, Cherie Davis.The complaint further alleges that Healy is now deceased, so he can no longer remove the content on Cherie's demand, and he did not have a "probate estate" to take over his blog.

What to do with the blogs of dead bloggers?