J-blogosphere is the name that some members of the Jewish blogging community use to refer to themselves. Blogs with a Jewish focus are called J-blogs. The name "J-blogosphere" was coined by Steven I. Weiss when he was the leader of "Protocols," a now defunct group J-blog, and one of the first notable Jewish blogs. Variations on the term were employed there as early as August 2003, and the first use of "J-blogosphere" appears to have been made in February 2004.

Read more about J-blogosphere:  Overview, The JIBs, Haveil Havalim