Cliopatria's History Blogroll now includes over 1000 blogs. Some of them are of exceptional merit. We've honored two blogs that are no longer current, Invisible Adjunct and Mode for Caleb, by entering them in the Hall of Fame. IA's archives are, alas, apparently now lost in the ether.* More recently, two other excellent blogs that are candidates for the Hall of Fame, Giornale Nuovo and The Proceedings of the Athansius Kircher Society, have become inactive. Like IA, the Athansius Kircher Society now exists on the net only in references by its admirers.
*Update: See Sharon Howard's correction in comments.

With that reminder that life on the internet is fleeting, there is a group of history blogs that seem to me to be central to history blogging. I don't presume to say that they are The Top 100 Liberal Arts Professor Blogs. Nor do I even suggest that they are better than other history blogs that are not on the list. I do mean to say that, without them, history education on the internet would be seriously impoverished. Below the fold are 80 history blogs that I recommend. You'll recognize some of them. Others, you may not yet have discovered: