David Sifry’s Updates released the State of the Blogosphere for the month of October.

Obviously, Blogging is still on the upswing. Technorati is tracking over 57 Million blogs (and growing).Interestingly, about 55% of blogs have been updated at least once in the past three months, which is an increase in the number of active blogs.

The was a slight decrease in the number of blogs created per day – it’s only a paltry 100,000 per day now. Part of this slowing growth in Technorati, as Sifry explains, is due to better screening of “splogs” or spam blogs. The algorithm has gotten much better at detecting and screening the massive amounts of blogs that spammers create. Most are being blocked before they even publish out to Technorati, simply because they are coming from known sources of spam.

There are a lot of great numbers for blog fiends. For one - the trend of blogs finding themselves in the top 100 media sites, which is growing significantly. Technorati is also working on developing a system to track authority bloggers - ones that have a good track record and analyzing their behavior.

This is a great report analyzing the continued growth and maturation of a young technology - a lot of great stuff for that next report or pitch.