This from fearnet.com
"Nightmare is a monthly digital publication with as solid a pedigree as you’re apt to find. It’s published by Creeping Hemlock Press, which has released books by Tim Lebbon, Tom Piccirilli and Lawrence Block as well as a stellar line of zombie novels under the “Print Is Dead” imprint.
To edit the magazine, Creeping Hemlock (or, as they’re otherwise known, R.J. and Julia Sevin) recruited noted anthologist John Joseph Adams, the man behind a number of acclaimed collections including The Living Dead and Wastelands, and the editor of the online science fiction/fantasy magazine Lightspeed. Together, this group has a deep appreciation of the horror genre, the good taste to pick great material, and the contacts to invite some well-known friends along for the ride."
read the full article here
Or, if you dare go straight to http://nightmare-magazine.com/