I'm probably missing something really obvious here.
I'm running a personal weblog that is separated into the main blog (for general updates and such), a photo blog, a writing blog, and an info page about the author(s). I have each of the four sections as a separate blog, all on the same MT installation, and then each blog is organized by categories. Other than minor changes that I plan on doing, I'm pretty pleased with this setup.
The problem is that I want to be able to search all 4 blogs from the main page. I tried looking it up in the manual, but that only seemed to describe how to EXCLUDE a blog. This suggests to me that it should be just a matter of changing a line, if that. And yet it still refuses to search more than just one blog.
What am I doing wrong?