Hey,
I started coding part of this yesterday (e.g. the blog portal thing); actually, before I came upon this thread. For what it's worth, firstblog.com/.net/.org are already taken.
The address for what I'm working on is:
http://blog.openfirst.org/
We have the resources to host a high volume site there. I'd appreciate any comments, etc. I've taken a few links to blogs that I found by searching through CD and asking friends, etc. and set them up. Oh, and you're more than welcome to send me your blog address if you want to be added. I'll be spiffing up the design of the site, etc. in the very near future.
Thanks,
Tim