Both explicit (thumbs up&#x2F;down) and implicit (click-aways &#x2F; closing window) may count toward quality.<p>There are other confusing cases. I watch a lot of long-form videos, some too long to view in a single session, many of which I download for offline viewing (yt-download). I&#x27;ve been quite actively dissuaded from either publicly rating videos, <i>or even linking to YouTube itself</i> on my primary social channel (G+) given the Anschluss forced-marriage between YouTube, G+, and what had once been individual and separate accounts (similar logic applies to Google Play, and I&#x27;ve taken to &quot;registering&quot; my Android devices under randomly generated usernames).<p>For videos I particularly like, I may reference them, but only specific portions which I skip to, view, and then close. That&#x27;s far less than a 100% view, but still significant.<p>It&#x27;s not that I&#x27;m opposed to providing appropriateness and quality data to YouTube. I <i>absolutely</i> give massive shits about who they share that data with, and how. The &quot;make it all public&quot; default is utterly fucked in the head.<p>I think Google are <i>starting</i> to realise that.