In a "dis-improvement," the DNN blogging functionality within the community is broken. Right now, none of the in-community blogs are accessible.
For the moment, the concensus seems to be that bloggers will need to set up and maintain their own blogs out-of-community, and we will aggregate those on the "blogs" page, and provide an OPML file so anyone can pick up all the blogs in their own RSS reader. The OPML file will be forthcoming.
The issue of in-community blogging is not closed - we just need to figure out what's wrong and fix it, or go a different direction. The community's Advisory Committee has it under discussion.