Graphic Novels
No Flying, No Tights - Graphic Novel review site
MyAnimeList - Combined list making and recommendation site for Manga and Anime
Mystery
Around the World in 80 Sleuths - There is a crime fiction destination for every reader and the Independent gives a great rundown of them all.
Stopyourkillingme A site to die for...if you love mystery books.
Allreaders.com Mysteries/Thrillers
Themysteryreader by D.N. Anderson.
Cluelass and The Mysterious Home Page
Mysterynet.com for everyone who loves a mystery. Not hugely helpful with booklists.
Mysterywriers.org contains lots of links, including Chicago Public Library's ''Suspicious Women: A Selected List'' mystery fiction featuring women protagonists
Poisoned Pen Book Store in Phoenix, Arizona is all mysteries.
Murder by the Book here in Denver is all mysteries!
Crime Space A place for readers and writers of crime fiction to meet.
Romance
The Romance Reader by D.N. Anderson
Science Fiction/Fantasy
SciFan Books and Links for the Science Fiction Fan
The Classics of Science Fiction and some great links too
Must Read: The Twenty Science Fiction Novels That Will Change Your Life
10 Awesome Sci/Fi Series that are NOT Harry Potter or Lord of the Rings