Monkou notes that in the African American sub-genre, "street fiction is the big thing, ghetto lit, urban lit . . . cautionary tales using gritty real-life examples. So instead of the hero being middle-income or a CEO, maybe the hero is an ex-drug dealer who is now trying to turn his life around and the street is calling him. It's definitely not the type of story that would have fit in the romance guidelines of yesteryear. These books are flying off the shelves with fairly young ages, which is kind of scary."
As they say, read the whole thing.