This article is from the misc.writing Writing FAQ, by Wendy Chatley Green email@example.com with numerous contributions by others.
[from the HWA Web site:]
The HORROR WRITERS ASSOCIATION (HWA) was formed in the 1980s to bring
together writers and others professionally interested in horror and
dark fantasy, and to foster a greater appreciation of dark fiction
among the general public.
To this end, among other benefits, the organization issues a regular
newsletter, presents the Bram Stoker Awards, and provides members with
the latest news on paying markets. We have sponsored a series of
successful members-only anthologies. Members also gain access to the
private HWA areas on various online services, including Genie's
Science Fiction Roundtables, Compuserve's SFLitForum 2, SFF-Net, and
Dueling Modems, and can, if they choose, receive informational
bulletins by e-mail.
10.5.10 Science Fiction and Fantasy Writers of America, Inc.
PO Box 171
Unity, ME 04988
email to: firstname.lastname@example.org
[From the By-Laws at their Web site:]
The purpose of the [Science Fiction and Fantasy Writers of America,
Inc.] shall be to promote the furtherance of the writing of science
fiction, fantasy, and related genres as a profession--in so doing, its
activities shall include, but not be limited to, informing science
fiction and fantasy writers on professional matters, protecting their
interests, and helping them deal effectively with agents, editors,
anthologists, and producers in non-print media; encouraging public
interest in and appreciation for science fiction and fantasy
literature; sponsoring, editing, and disseminating writings, papers,
books, pamphlets, and other publications which exemplify science
fiction and fantasy literature of high quality; conducting
conferences, public discussion groups, forums, lectures, and seminar
programs; and furnishing any service or performing any kind of work
connected with this stated purpose.