According to Technorati data there are over 175,000 new blogs every day. Currently they are tracking 60 million blogs. There is roughly 1.6 million posts per day, or over 18 updates a second.
Adding Technorati will drive more traffic to your blog. As a member of Technorati your blog will be indexed and updated automatically making it easy for readers to find you. Technorati also makes it easy for you to search, discover and organize other blogs.
Click on the claim your blog button on the homepage. This will direct you to sign up for an account. After you have signed up you will be directed on how to claim your blog. They give you three different ways to can claim your blog.