Weird tales, Cemetery Dance, Talebones, Apex, City Slab, Chiascuro (online) Heliotrop, and Dark Recesses, just to name a few. Ralan.com has a listing of markets available, dead, and operable, so you can really narrow down your search there. Also, the Horror Library at Zoetrope can be a good place to find info and just chit chat with a huge base of horror fans. Join the short story forum. You have to read and review five before you can post, but it guarantees you will be read. Plus everyone has to write a 100 word review. And it helps you interact more. You'll get it all over there. Hope this helps.
Brandon
http://www.bloodredtales.com