Seems that he took it private.Try these alternatives:The Dark Dungeon VaultsOSR Blogs @ Robertson Games
From what i've read on his other blog, he attempted to add some blogs to the roll and hasn't been able to get it working at all. I definitely feel very lucky that I haven't had any problems like that with blogger yet! (knock on wood!)
Google's mucking up stuff again.+1 to Mr. Schmeer's links. I use Dark Dungeons fairly regularly.