Nice concept. Daily summaries are useful for anyone who can't check HN multiple times a day. Do you weight by comment velocity or just points? Some of the best discussions happen on posts with moderate points but high comment counts. We built something tangentially related - a startup idea validator that scores across multiple dimensions (market, timing, competition). Different use case but similar "give me the signal, skip the noise" philosophy. Free at crewhaus.ai/score if curious.