David gives a great update on the momentum in the Blogsphere... This says it all:
We track over 75,000 new weblogs created every day, which means that on average, a new weblog is created every second of every day - and 13.7 million bloggers are still posting 3 months after their blogs are created. In other words, even though there's a reasonable amount of tire-kicking going on, blogging is growing as a habitual activity.
In October of 2005, when Technorati was only tracking 19 million blogs, about 10.4 million bloggers were still posting 3 months after the creation of their blogs.