Iron Cauldron Books has been in business since 2007. They are a small press that publishes work in the horror genre in both print and ebook formats. They have three anthology calls listed and payment is a percentage of royalties.
1. Circus/Carnival Horror - 2000 to 4000 words, October 1 deadline
2. Steampunk Horror - 2000 to 4000 words, December 1 deadline
3. Near Death Experience - non-fiction 2000 to 4000 words, January 1, 2013 deadline
They also publish novellas, short story collections and novels. Their homepage is here http://www.ironcauldronbooks.com/ Just scroll down to the bottom of the page and click on For Writers to find the details - the deadlines were on their submishmash page.