The Technorati blog index and rankings are gone.
As of 2016, Technorati was acquired by Synacor.
Blog indexes were one backlink for SEO and a source of curation for the early Web 2.0
Here is a TechCrunch article on Technorati, just after my 2005 blog post: Technorati Beta Profile.
Here is a 2014 post on the sunsetting of Technorati: RIP Technorati Blog Search & Rankings: The Once Popular Blog Tools Have Been Sunset.