Insomnia Press has issued a call for submission for their February 2013 issue. They're looking for dark fiction with the theme "As I Die Lying". Flash fiction and short stories up to 3000 words in any genre so long as the story is dark. This is a non-paying market. You can find the details here
UPDATE: August 8, 2013 Duotrope has declared this market dead and the site has disappeared into the ether.