I just received this email from Technorati:
Congratulations, your claim is now complete! Please allow 24 to 48 hours for Authority and recent posts to begin showing for your site now that it has been successfully claimed. Once they are there, we will update your site's Authority once per day. At first you may not see your site listed in the Technorati Blog Directory for all of the categories you've selected. As you write blog posts around those topics, you should see your Topical Authority in those categories begin to rise.
So I'll continue to post and we'll see what, if anything, happens.