By the University of Michigan with a symbolism dictionary and an electronic library of full text science fiction and fantasy books. Bibliographies, reading lists, television, movies, research, publishers, etc. Inc. - Writers' advocacy organization, gives out the Nebula Award. Articles on writing and getting published as well as links to many author sites.
Site includes a publishing schedule, sample chapters, and links to author sites.
Baen - Another major publisher. Hatrack River - Official page of Orson Scott Card. News, signing dates, sample chapters, etc. Also has sections on games and numerous interviews. Show times and information pages as well as lots of general Science Fiction news.