NESFA 
The New England Science Fiction Association's page includes stuff
like recommended books' lists, and an interesting competition for young writers, and more.
Check it out.Mythopoeic Society
A scholarly society devoted to J.R.R. Tolkien, C.S. Lewis, Charles
Williams and other "Inklings." Information on the Mythopoeic
Awards, Mythcon, excerpts from monthly newsletters, membership information and more. For
more, see the awards and e-zines
sections.
The 4th
Dimension
This site is a database of science fiction books dealing with time travel. It is
usefull, because it states the author's name,the title and a brief description of the
books. Try it.
The Ben Bova
Webpages
Ben Bova is the author of more than 90 novels and a past
president of the Science Fiction and Fantasy Writers of America. He wrote Moonwar.
I found it somewhere, check it and tell me :)
Darkover
This site is dedicated to Marion Zimmer Bradley's
Darkover series, an example of what fans can do. You can find out about the books, fan
activities and the history of Darkover.
Dictionary of Faeries
For those of us who are still wondering if there are fairies in the world, this
dictionary comes in handy. A very detailed site too.
Douglas
Adams Worship Page
If you are a total fan of the Extreme guy, don't panic! There is the Douglas Adams
page where you can find out all about The Hitchhiker's Guide to the Galaxy.
Drizzit's
Underdark
Now, such sites are my favorite ones: If you are a TSR fan, of both Games and
Novels, then you probably know the legendary Drow, Drizzt. Find out some more about him,
right here! (My best friend Antony is gonna be very delighted with this one!)
Event Horizon
You can read collaborative fiction online in science fiction, fantasy and horror.
The site has no actual link to the movie though, so don't confuse them ok?
Fantasia
Here you can find lots of information about Fantasy. The site features interesting
stuff about authors like J. R. R. Tolkein, Terry Pratchett and Raymond Feist. Hey, could
we leave this out?
Fantasy Finder
A good imformational site where you can read reviews, check out the top 5 list for
Sci Fi and search for books. It also includes a discussion board area.
Feminist Science
Fiction and Fantasy
A wonderful site with information on feminist sci-fi books. Some peole I know won't
like this one...
The
Frontier
A Fantasy centric site with author information and some short fiction by the author
of the site.
The Moon in Science
Fiction
Ever wondered how many Science Fiction books reference the moon? You'll get your
answer here, in a site similar to the Fairies listing. Cute, really!
The Ray Bradbury
Page
This site is for the fans of the author of Something Wicked This Way Comes.
It contains pictures and biographical information, and also a complete bibliography of Ray
Bradbuty's books.
Sci-Fi Book Club
Join the Sci-Fi book club and receive your choice in hardback books by mail, but I
don't know how this works for Greece though...
Sci-Fi Channel Dominion
The Sci-Fi Channel online. Includes chat, boards, an online store and information
on the current headlines.
Science Fiction & Fantasy
Net
A meeting place for authors and readers to get together to discuss Sci Fi books and
publications. It includes a bookstore and chat area.
Alexandria Digital Literature
This is a book - recomendation site-engine, phew! Hard to say... Well,
anyway, it's usefull and brings about quick results.
University of Michigan Fantasy
& Science Fiction Library
Part of the University's overall
Science Fiction & Fantasy site, the library provides a trio of valuable resources:
a listing of public domain Science
Fiction & Fantasy related texts (downloadable), a smaller multimedia library and a dictionary of
symbolism. Esy to navigate and very, very interesting.
The
Cyberpunk FAQ
I heard a friend tell me yesterday that he loves Cyberpunk, and Gibson. Well,
actually, it's not only Gibson. Here it goes then...
Legends Journal
Here is an online journal about everything in Sci Fi which is becoming legendary.
Talk about the heroes and white knights of the genre, and everything that has to do with
the Science Fiction Round Table.
Locus Index
Some people have really a big crush on Sci Fi. Here is a list of nearly every
fantastic literature book or short story story published since 1984 (!), as compiled by Locus
Magazine. And then again, there are those whi live for it: If you're looking for an
earlier short story(!!), there's the Index to SF Anthologies and Collections.
Science Fiction and Fantasy Writers of America
This is the home site of the SFWA, and includes info on the Nebula awards,
membership stuff, how to subscribe to the Bulletin and others, plus some useful
articles on how to write.