Saber Shadowkitten's
Buffy the Vampire Slayer Stories
Good source of lots and lots (and lots) of Buffy fan fiction
And if you felt the lack of smut on my pages, try Saber's!
 

Buffy the Vampire Slayer Chat Room
If you want to meet any of the nifty members of the Queen's Court,
and if you can get past the moronic posturing and pick-up lines from other people,
then the Buffy Chat Room is a fun place to go.
Tell 'em TQ sent you --
but takes no responsibility for you
 

Sugar and Spike
Sandra Schimmel's Buffy Stories
Good source for some quality Buffy fiction;
Sandra has won several awards for her writing -- and deserves them.
 

Jane Mortimer
Fan Fiction Essays
A wonderful apologia for fan fiction in general,
and erotic and slash fiction as well
(there's none of that here, but read it for the sake of some of my other links,
which aren't quite so squeaky-clean).