I've mentioned during previous reading periods that there always seems to be a glut of something in Raven Electrick's slush pile. Usually it's a subgenre or theme--one time it was poems about fairies, another it was astronomical poems. But this time it's an entire genre. For the first time ever, the vast majority of flash submissions are in the horror genre. I've never had one genre so predominate during a reading period. I'll assume it's just one of those coincidences and nothing to do with the current zeitgeist.
In any case, I've now responded to submissions sent through March 12.