Blogs have several uses. They can be used to simply practice writing with an audience in mind. They can be ways to share our ideas, insights and learning with people we know and don't know. They can be ways of provoking conversations about any topics, issues or questions. I know more people who don't blog and I think should than people who do and I think shouldn't. It doesn't have to be a frequently published blog. It can be sporadic and episodic. Anyone who's thinking about doing one probably should expriement with it.