As for Library Journal itself, below is brief description of the publication from the publisher's web site. I'm quite proud to be contributing here, and thought I would share this with you, Dear Reader.
From Media Source, Inc.:
Founded in 1876, Library Journal is one of the oldest and most respected publications covering the library field. Over 100,000 library directors, administrators, and staff in public, academic, and special libraries read LJ. In its twenty annual issues, Library Journal reviews nearly 7,000 books, and provides coverage of technology, management, policy, and other professional concerns.