As a follow-up to yesterday's post exploring the possibilities of Technorati's new "personal tags," I have doctored up an existing tag-maker bookmarklet (thanks, Fritz) to add a Technorati username. Ran into a problem including the bookmarklet direct in blogger, so it is hosted on Geocities. From the Geocities page, drag the bookmarklet link to your browser's links bar. You may find the bookmarklet too long for the bar. If so, try running it in blummy.
This is a bookmarklet that points to material from your personal account, so you'll need to edit it to include your username. Right click the bookmarklet on your toolbar, scroll through the "properties" until you see the word "username" (no quotes) and replace it with your technorati signon.
This will generate technorati tags, with the rel=tag attribute, but with an additional modifier in the URL ?user=username to pull search results only from your claimed blogs.
As Tor points out in the comments on yesterday's post, this isn't going to be much use to you if you have multiple claimed blogs... but if you've only got one, this might substitute for categories quite nicely. Please try it out, & hit the comments to let me know how it is working for you.