Making a metablog with TrackBack pings

In my continuing effort to use my own blogorrhea as a guinea pig, I have some plans in the works for my x-pollen.com domain. For example, I’m planning to move my personal blog from LiveJournal to Movable Type. I’ll document the process as I do it.
I’m also trying to set up a TrackBack ping-based metablog to aggregate all (or as many as possible) of my other log entries into one rolling meta index. For the MT blogs, it’s easy to make them ping a specific category in another blog (which I’m calling metaxian), but I haven’t figured out yet how to capture and display those pings on the MT index page. I’ve followed the instructions (I think I have) but so far nothing is showing up at http://x-pollen.com/metaxian/ .
My next step will be to look at the discussion forums at movabletype.org to see if these questions have been asked and answered. Since http://blogroots.com/blogpopuli.blog and the KMpings site are both working examples of the kind of metablog I’m trying to create, none of this should be rocket science.
I was hoping that each ping could trigger a blog entry, which could then roll off the home page and be archived as usual, but it appears that the pings must be listed as their own entities, so I don’t know what that says about archiving older pings. I have much still to learn about all of this. Suggestions are welcome.