I'm posting a story I co-wrote with sendintheclowns- it is about a psychic vampire who has an addiction to a young Sam Winchester. We have tried to write the vampire in a sympathetic way.

Every Breath You Take- summary- A move puts fifteen year old Sam in danger when their apartment manager turns out to be a psychic vampire. Will her addiction to Sam, destroy the Winchesters? Co-written by Sendintheclowns
http://www.fanfiction.net/s/4078625/1/Every_Breath_You_Take

It's a self-rec, but I think it might be the kind of thing you're talking about:

http://girlfan1979.livejournal.com/56194.html (it's Wincest)

I have my all-time favorite vampire fics saved here (http://www.livejournal.com/tools/memories.bml?user=vorpalblades&keyword=Vampires&filter=all). Happy reading!

You could check out unrequited666.livejournal.com she has a vampire fic. called "Against My Nature" it is a WIP with 27 chapters finished and posted and she is very good about updating regularly.

My favorite! "A Daisy If You Do"

(Vampy Wincest ... Sam / John / Dean... all that good stuff!)

http://www.livejournal.com/tools/memories.bml?user=mortified1&keyword=Daisy&filter=all

This one is fairly short but it's in my top ten of all time fave SPN fanfics...

"Didn't Dad Ever Tell You it isn't Nice to Play with your Food?"
http://leonidaslion.livejournal.com/54633.html?view=629097

acostilow wrote a very good one called Bring Me to Life (http://umbraeabincanum.livejournal.com/6816.html) on her fic journal umbraeabincanum.

unrequited666 also has a J2 on this page called Against My Nature (http://unrequited666.livejournal.com/5897.html). Just scroll down and it's there.

Edited 2008-03-27 09:05 am (UTC)

audrarose wrote and intensely hot vamp fic where Dean gets turned.. it has to be one of my favorites.
Venom!series (http://audrarose.livejournal.com/50151.html)

Have you read Sanctuary (complete) and The City (WIP) by house_of_lantis? It's an amazing verse that's regularly updated. You can find it at her LJ.