I've found a really cool writing call. It's called Postcards from Hell.
It's someone experiment (hopefully an successful one): send out 13 postcards to subscribers; each postcard contains a short horror story that is a glimpse of hell.
It sounds really interesting. Plus, it's $50 for a 500-word piece, which is about ten-times more than the going rate for flash fiction. Even if I don't come up with something to submit I think I'm going to subscribe. Who doesn't like to get mail? (Even if it's from hell.)