I should probably add this as a comment to Julie's previous post, but not sure how many people would see it there. One blog site that I am familiar with is LeaderTalk.

The following quote is taken from the "About" section of their homepage.

"LeaderTalk is the first group blog written by school leaders for school leaders. We hope that our insights and resources are beneficial to P-12 administrators and educational leadership preparation programs."

One link from the LeaderTalk page will take you to CASTLE (Center for the Advanced Study of Technology Leadership in Education). This is not a blog site, but does contain links to a few blogs in the left column.

These two sites alone provide access to enough information and links to additional resources to build a solid foundation of blog sites.