Dave Sifry of Technorati has released his six month report on The State of the Blogosphere.

Part One focuses on:

…the macro growth of the blogosphere, both in the number of bloggers out there, as well as in the growth of new blogs per day. You can compare the chart below to the charts from October 2004 and March 2005.

Basic stats:

- Technorati was tracking over 14.2 Million weblogs, and over 1.3 billion links in July 2005
- The blogosphere continues to double about every 5.5 months
- A new blog is created about every second, there are over 80,000 created daily
- About 55% of all blogs are active, and that has remained a consistent statistic for at least a year
- About 13% of all blogs are updated at least weekly

Part II
Summary:

- Technorati is tracking about 900,000 blog posts created every day
- That’s about 10.4 blog posts per second, on average
- Median time from posting to inclusion in the Technorati index is under 5 minutes
- Significant increases in posting volume are due to increased mainstream use of easy hosted tools as well as simple posting interfaces like post-from-IM and moblogging tools
- Weekends tend to be slower posting days by about 5-10% of the weekly averages
- During the day, posting tends to peak between the hours of 7AM and noon Pacific time (10AM - 3PM Eastern time)
- Worldwide news events cause ripples through the blogosphere - not only in search volume, but also in posting volume