Daily Science Fiction is a site that publishes a sci-fi or fantasy short story every weekday. You can read them on the site or you can sign up to the mailing list and get them delivered fresh to your inbox every morning.
They buy flash fiction at 8 US cents a word plus the option to pay another 5 cents a word if they republish it in an anthology, 1500 words absolute maximum. I've submitted one story a while back - sadly rejected - and I'm getting another ready at the moment.
I find their stories are a bit hit and miss. Sometimes they're unoriginal or pointless or I just don't really 'get' it, or they might be a good story poorly written. Other times they're just fantastic.
You can, if you choose, rate them from 1-7 'rocket dragons', which is just the icon they use instead of stars. I have pretty high stamdards for a top rating: I've been reading for the best part of two years and handed out maybe four or five 7's. Today's story was a 7. It hit me so hard in the feels I made this topic just to share it with you.
On Deliverance