Ultimate Tag Warrior provided a really handy way to tag posts in WordPress, by just entering tags into a text field ala del.icio.us or Flickr.
But, it uses its own tags database, meaning external tools like Flock, MarsEdit, Ecto, etc... are unable to tag new posts. And I get to do some funkery each time I update the K2 theme to match the latest and greatest beta.
So, I just spent a couple of hours this evening manually migrating UTW tags to be stored in stock WordPress Categories. I would have played around with some SQL to do it, but would rather do some mindless copy/pastery in front of the tube.
Dropping UTW seems to have shaved almost 100 database queries from the generation of the front page of this blog. That ain't half bad.