Proclaimed as the "Word of the Year" in 2004 by the "Merriam-Webster Online Dictionary," blog is the official abbreviated name for Weblog. The Weblog began as an online journal, with a single author providing hyperlinks to Web sites of interest and posting personal commentaries for the world to read, ponder, and discuss--sometimes rather heatedly. In 1999, the Weblog was nicknamed the blog as it expanded to accommodate diverse users--from families to special interest groups, from communities to corporations. With nearly 50 million people blogging in 2005, this forum for personal expression has grown exponentially. In this paper, the author discusses the phenomenon of blogosphere and the educational use of blogs or edublogs. An edublog may be used as a fast, efficient means of communication (i.e., an electronic bulletin board), as an instructional resource, as a collaborative tool, and as a showcase for student projects. Though edublogs have tremendous educational potential, teachers should be aware of their downside. Two issues teachers must face when using edublogs relate to accessibility and student safety.