I wonder if I'm the last guy to the party when I write about blogs I discover, but just in case you haven't read them yet:
First off is "Anti-Neo-Confederate", presented by Edward Sebesta. This blog joins nicely with the exploration of the Lost Cause mythology we've been working on here in that he sheds light on contemporary places and personalities that help foment this thinking. The University of Texas Press has published "Neo-Confederacy: A Critical Introduction", to which Mr. Sebesta was a contributor. Yes, I'm buying it.
When you're done getting your blood pressure up, turn to Jim Schmidt's Civil War Medicine (and Writing) to mellow out. This blog has a great mix of themes as well as links to his various publications, including his book "Lincoln's Labels".