So, I've moved my blog over from Drupal to DokuWiki. A big motivation for switching was better interoperability with my new research wiki, http://leftleftupup.com.
It was a bit difficult to get all the data out of Drupal. I ended up writing a ruby script to do the bulk of the migration. I then had to go through each blog post manually and clean up broken links and messy characters. If anyone is thinking about making the same move, you can see the script I used: extract drupal to text files - ruby (do NOT use this script - it will not get all of your data, and it will probably mangle all your posts. I'm providing it as an example only!)
I've deleted most of the comments. They've been archived for posterity.
If you see anything that isn't working properly, please let me know.
I'm really impressed with how easy dokuwiki is to set up. It's fast, uses plain text files, and is very simple to use.