If you want to have your category-tagged posts aggregated by Technorati, “tag” your post by including a special link:
  <a href="http://technorati.com/tag/[tagname]" rel="tag">[tagname]</a>
(from Technorati Tags Help).
Since I was there, I’ve modified how post categories are visualized on my blog, they should float on the right with a little cloud image linking to the relative tag page on Technorati. If you notice any problem (especially with IExplorer), please let me know.