BookSpot
Features book reviews and news, reading lists, and author and publisher information.
http://www.bookspot.com/

Celebration of Women Writers
Comprehensive listing of links to biographical and bibliographical information about women writers, and complete published books written by women.
http://digital.library.upenn.edu/women/

SparkNotes.com
Study guides and discussion forums offered on various academic subjects. Literature section includes brief analyses of characters, themes and plots
http://www.sparknotes.com/