Are you a teacher, student, researcher, professors, librarian, or someone involved in education. Then you might consider edublogging.
Blog is an online publishing tool that enables people to easily publish their insights, dislikes, discoveries, or anything. An edublog is a blog written by someone with a stake in education.
List of Multiuser edublogging platforms
Edublogs – Widely used free blogging for teachers and students with useful features and customizable themes, with 20MB of free upload space.
Classblogmeister – Free edublog that have been developed specifically for classroom use.
EduSpaces – Social Networking site dedicated to education and educational technology.
TeachFor.Us – TeachFor.Us is a free blog community for Teach For America teachers.
Teacher Lingo – An educational community to connect teachers from every level.
Harvard – Free blogs for the Harvard community. Anyone with an email address at harvard.edu, radcliffe.edu, or hbs.edu can sign up instantly and be blogging in minutes.
[Reference – Edublog ]