Some people really like writing, or blogging, so they do it anyway, whether is useful or not. I think the point Keith is making that successful people don't ha

Some people really like writing, or blogging, so they do it anyway, whether is useful or not. I think the point Keith is making that successful people don't have time to blog, or the blog really doesn't help that much. They prioritize their time to do things that actually matter for their business, rather than being on top of HN or being tweeted 1000 times. It's not the whole truth. When you have actually "made it", had some successes, you don't need the promotion or visibility that much, but when you're just starting out, basically anything might help.