I just wanted to mention that I've recently started a music discussion board:
Dancing About Architecture
The name of the message board is inspired by the quote, "Talking about music is like dancing about architecture." which I've seen credited to both Steve Martin and Elvis Costello in different places.
There's a place on there for discussion of just about any kind of music you can imagine. So feel free to jump in!
Many of those who have already joined are fellow music bloggers. One of the reasons I set up the board was/is the hope that some of the discussion generated on there might inspire future blog postings either by myself or by any of the other bloggers who have decided to participate.