Anthologies are excellent markets for short story writers. Here are a few anthology markets looking for horror stories.
2012AD Anthology – This is an apocalypse themed anthology. Your stories must be based on the ancient Mayan prediction of the world ending on December 21st, 2012. Payment: 1-4.9 US cents per word. Deadline: June 18th, 2009
The Blackness Within Anthology – This one is also themed. Your stories must encompass all stages of Moccus’s reappearance from infancy to death (his middle age and near-future) and how his influence spread throughout the world. Payment: under 1 US cent per word. Deadline: When filled.
Heavy Metal Horror Anthology – Heavy metal is the theme. Your story must contain this element in some way. The rest is up to you. Payment: under 1 US cent per word. Deadline: July 15th, 2009.
Shadows of the Emerald City Anthology – Many love the story of the Wizard of Oz. This is your chance to put your own horror twist to it. Your stories have to be based on the world of Oz. Payment: under 1 US cent per word. Deadline: July 31st, 2009.
Side Show 2: Tales of the Big Top and the Bizarre – For this anthology, they are looking for stories about side shows, carnivals, circuses, fairs, freak shows, and traveling shows. Payment: under 1 US cent per word. Deadline: When filled.