State of the Blogosphere - Part 2: Posting Volume
Technorati has a nice graph showing various memes throughout the blogosphere. At the end of July, there were about 900,000 posts created each day. That’s about 37,500 posts every hour, or 10.4 posts per second. It peaked at just over 1.1 Million posts per day. Posting volume has more than doubled in the 7 months from January through July.