Something that is very important to me is parent involvement. As a first grade teacher, it might be challenging to have my first graders blogging, but I can create a discussion board that parents can assist their chidlren with. I could give homework assignments which involve posting to the blog. (I could do the same with a wiki.) For parents, I can post newsletters and important information. For educators, I can post lesson plans and teaching ideas.
Here is a blog aboug blogging in education that I found interesting and beneficial: Learning.now
Here are articles about blogging in the classroom: Using Blogs to Integrate Technology in the Classroom and Using Blogs to Promote Authentic Learning in the Classroom