Anyone interested in how newspapers are adapting to interactive technologies should study the GNR. They're probably the national leader in interactivity. Their editor blogs, as do some of their other writers. Apparently they get some comments and readers, too, which is different from a lot of newspaper blogs.
According to this article, they have a solid core of about 75 bloggers who post comments and advance discussions. That's pretty good, considering that we'd be lucky to field a dozen or two in the whole friggin' state.