This is the fate of a lot of gaming blogs, and there are many reasons. A lot of cool stuff has already been said. People are in abeyance with diverse systems until the next D&D arrives. But most importantly, I think that is it because there are a lot more different platforms out there for communication. Long form blogging is a bit more of a challenge in a world where you can slap up an image, a link, or a stray thought at a moment's notice.
But there is a extremely comprehensive listing here, complete with additions and notes. here's what he says about Grubbstreet:
Former TSR author Jeff Grubb's blog. This bad boy mostly focuses on his life and on the world around him, though on occasion he will stray into old tributaries.Updates: Depending on what's going on in his area, between two and twenty entries a month.I think that's a pretty fair cop, and a warning that sometime, somewhere, I REALLY should start talking about gaming again. But if you're looking for real content, here's a great place to start.