EServer TC Library - A real-time chat site for technical communicators, built to create an inviting online space as a way to foster a sense of community among professionals in this emerging field.
Manual-Forum - Forum for discussing the quality of user manuals. Features over 20 different discussions of interest to technical writers, technical communicators, translators and endusers.
Montreal Technical Writers Forum - mtl_techwriter is a place to discuss issues relating to the technical writing profession and everything else in between. While the membership might weigh heavily with Montreal/Quebec based writers, anyone can join in on the discussion, regardless of where they are from.
Rhetorical Theory discussion group - For the discussion of rhetoric. Open to teachers, students, practitioners, or the idly curious. Discussion of both pure theory and practical applications of theory.
xml-doc - A mailing list where writers, developers, product and service vendors, and others discuss the application of XML, SGML, and related technologies to structured authoring, particularly authoring of documentation for computer software and hardware.
Yahoo Groups - Technical Writing - Choose from over 15 discussion groups and mailing lists directly related to technical writing.