When I originally announced the subtext project, I had planned to not include multi-blog support even though it was already included in the .TEXT codebase.
The primary reason I wanted to exclude this feature was to simplify the code as well as the administration of a blog. If you ever had the pleasure to install .TEXT, you would remember that there were four web.config files from which you had to choose the appropriate one.
What changed my mind, besides the pleas from several multi-blog .TEXT users, was the day I thought it would be nice to create a blog for my homeowners association. I didn’t want to have to add another installation of Subtext for each blog.
However, any multi-blog scenario would have to adhere to our goal in making Subtext simple to set up and easy to use. So for the most part, the Subtext user experience is optimized for users with a single blog. For these users, you pretty much never need to know there is support for multiple blogs.
It turns out there was a lot of duplication of effort among the four config files, so by being careful, I distilled everything into a single config file. This alone should make the process of installation much simpler.
However, for those of you who wish to install multiple blogs, I’ve written up some documentation on how it works. Subtext supports multiple blogs from the same domain as well as multiple blogs from different domains.