I can almost 100% guarantee you that having an automatic slider killed a lot of upvotes for you. I'm not trying to be a dick, I've actually seen this over an over, and I experience it as a user - if I see a Show HN, I'm upvoting unless I have a reason not to. I despite automatic sliders, and yours is particularly egregious. Long term, it's a tiny mistake in what seems to be an otherwise interesting project, so I'd do a way with it immediately to avoid the distraction.