How can educational leaders use blogs effectively??

I thinking blogging is a very useful tools for educational leaders.  For instance, it is a great place to write your thoughts/express ideas pertaining to your school.  If you are doing any action research inquiries, you can post questions/concerns.  Blogging is a great tool for feedback.  Educational leaders from across the world can give you feedback about anything that may need to be addressed with your school or curriculum.  If you work together with other principals you can share ideas with each other.  I think the biggest advantage of blogging is the ability to link with educational leaders across the world and share ideas with each other.