Technorati is for blog what Google is for classical web sites. But what is the difference?

First, the difference is about the way to register a new entry. Google is using a robot that periodically crawl your web site. For Technorati, bloggers must say to Technorati that they have something new. This operation is called a "ping" (nothing to do with TCP/IP ping) and is done using this Technorati Ping Form. Your note will appear in Technorati only several minutes after submission instead of hours or days for Google bot to crawl your page.

Another difference is that Technorati uses tags (like del.icio.us, see my previous note on del.icio.us). Tags can be seen as categories. Popular Technorati tags can be seen here. The goal is to be able to see what bloggers are saying about a particular topic. If you type http://www.technorati.com/tag/webdesign in a browser, you will have what people are currently saying about Java. If you want something to be store on a particular tag, just put a link like that under your note:
<a href="http://www.technorati.com/tag/technorati" rel="tag">technorati</a>.

Starting from now you will see Technorati tags in the footer of our blog notes.