Just ran across this. Forrester CEO George Colony started a blog in late January 2008. In April he spoke at the Forrester Marketing Forum on his first two months of blogging. "It only takes an hour a week," he said but he finds himself thinking about writing the blog all week. "So it's taking some of my mindshare." So true. It's one of the upsides as well as the downsides of maintaining a blog. You have to think. That's hard.
He also makes the point that (at the time) no one was reading his blog so he wasn't getting enough comments:
"I often feel like I'm on a one-way phone conversation -- I talk, but there's no one listening. I lust for value-filled comments that will improve and drive my ideas."