Blogging is a widely used means of communication for millions of Internet users around the world. Blogs, which are Web sites or Weblogs where entries may be posted on a regular basis, frequently serve as online diaries or commentaries and may include text, images, and links to other sources. Diaries are no longer kept under lock and key. Today's teens seem to prefer a more open approach to life. They have no qualms about posting their personal and private thoughts on the Internet. Blogs increasingly appeal to teenagers who use them as an informal social networking system. They share their thoughts and opinions on just about everything and often use blogs as creative outlets for music, poetry, photographs, and film. Why has blogging emerged as an important issue for secondary school principals and educational leaders? First, the sheer number of teens engaged in blogging is significant. Secondly, the content of blogs is unpredictable and potentially offensive or threatening. Principals are wary of blogs because they know that student conduct outside of school often affects conduct inside the school. In light of the uncertainty related to the Internet, legal limitations, and student discipline, school administrators need to know where the school's authority and responsibility for blogs begin and where they end. Before this can be determined, it is important to look at the benchmark cases and the statute that courts currently use as a basis for decisions in First Amendment cases that involve blogging. This issue of "A Legal Memorandum" describes these benchmark cases to help administrators familiarize themselves, their staff members, and their students with the legal liability issues that may arise when technology is used inappropriately. (Contains 1 figure.)