If you are writing your own blog, you might be interested in this information:
Technorati.com is one of the most famous blog directories out there. To increase visibility of your blog, it is a good idea to claim it with them. Go to technorati.com/blog-claiming-faq for the details.
The steps are simple:
Create an account
Login
Click on your username in the upper right corner
Scroll down all the way till you see the “Claim Blog” form
Fill out the form
Technorati will send you an email with a claim code (E.g.: WZB2CAS6297Z )
Create a new blog entry containing this code
Repeat steps 2,3 and 4
Click the “Check Claim” button
Click the “Verify Claim Token” button
Now your Blog will undergo a review process, which might take some time, so be patient.