Let me give a firm recomendation for new writers to submit to flashquake, who didn't take my story (fools!), but who did offer the detailed comments of six(!) different editors. I've never seen anything like that in a rejection letter before.

If you have short shorts, I doubt you're going to find a better or more helpful market for them (except, of course, for the Backwards City Review). I know I'll be trying them again in September.

flashquake submission guidelines.