Tom Purser, BDG fan and guru – past editor of the Blackmar Diemer World magazine, and author of several BDG (and one Elephant Gambit) books – has his own blog these days, "Tom's BDG Pages," at http://bdgpages.blogspot.com/.
The blog includes games and analysis, but also warmly showcases the personality of the opening and those who have played it.
Check it out!