Blurbs are basically a sales pitch, right? So the first thing I look for is the hook. I'm not talking about a vague 'epic journey' cliché. I want to know the specific, immediate problem. Like, is it about a thief who has to steal a star, but the star is a person? That tells me the premise, the conflict, and hints at potential character dynamics in one go. If a blurb doesn't give me that core unique problem, my eyes glaze over.
Beyond that, a good blurb review should point out what the tone promises. Does it sound gritty and dark, or is it a rom-com with witty banter? Mentioning the narrative style, like first-person present tense for urgency or third-person omniscient for an epic feel, helps set reader expectations. I also need a sense of the emotional payoff—is this a heart-wrenching tragedy or a cozy, uplifting read? The blurb's language should mirror that. Finally, if there's a notable attribute like a cliffhanger ending or a particular spice level, flagging that saves readers from nasty surprises or guides them straight to their jam.