Other than that we have no real criteria - just make it good. It's probably best to avoid sending us novel length submissions. Stick to short stories or novella format.
Profanity is okay to a certain degree.
So Word, Works, Word Perfect, or flat ascii would be fine. Send us a .txt file if you must. Avoid nudity, strong sexual themes and overtly profane imagery. We want to keep the site PG-13. We have PhotoShop and Paint Shop Pro available to us, but your art will end up as a .jpg or .gif ultimately anyway, so please save us the conversion time.