This is a pretty good take on the question of how much time one should spend blogging. Of note:
"Newer writers still trying to build their credibility and client list might protest that they have much more free time than Bly has and they need to find a way to market themselves so blogging is a great, forward-thinking way of doing it. There's something to that, but honestly, I think it's an easy way out, the path of least resistance--what new writers should probably be doing, instead of blogging and reading other blogs and commenting on other blogs and brain-storming ideas for their latest blog post, is what many writers hate doing--cold-calling for leads non-stop."
Of course, this applies to people like me--mostly unpublished, 'new', if you will, and looking for a way to promote my name and my work. First and foremost, this blog is a marketing tool. It's all about increasing exposure. But it's also about connecting with like-minded individuals and sharing information.
According to one referenced blogger, one shouldn't spend more than 10 minutes/day or an hour/week blogging. How in the world are you supposed to have any quality posts with such time constraints? Geez. The guy is really saying that blogging isn't really work, and that time spent blogging is time not spent working. True enough, to a point.
Another blogger says to blog in moderation--only post every 4-6 days. That way each post has time to stew, and be read, and garner comments. Makes sense.
Me, I'm going to blog whenever I feel like it and whenever I have time. I'll probably give the moderation thing a try, though, if only to try to produce more meaningful posts. Try it yourself and we'll all make the world a more meaningful place together. ;-)
Vigorous Writing: How Much Time Should Professional Writers Spend Blogging?