Since we have some new friends here at TSR who might not be familiar with EDF, here's a little more information -
For writers: it's a great market for flash fiction. They're open to pretty much all genres. The editors provide excellent constructive criticism, regardless of whether or not they accept your story. The readers vote and comment, giving the writer instant feedback. There's also an opportunity for your story to be included in an anthology, made into a podcast and, well...just go ahead and check out the Submission Guidelines for all the details.
For readers: you can sign up and get a story delivered to your inbox every day. You never know what genre it will be, so it's always a bit of a surprise, but I've read some great writers at EDF who I might never have stumbled across otherwise.
Check out May's Table of Contents for all the upcoming stories - including mine! - and also to see what the editors are looking for during the next few months.