JD points out that blogging is 10 years old this month. Today I was on a webinar panel, organized by Brian Anderson of PR/Newswire, discussing blogging. There were something like 3,000 people registered to listen and ask questions. Holy cow. For several years the number of active blogs has doubled every six months. That growth has slowed, according to the Technorati folks, but no one should doubt this: The world has changed. There is a new global conversation under way. There's no going back.