As I understand it... If you&#x27;re using Mobile Safari (or many other mobile browsers), and you double-tap something, it&#x27;s interpreted as meaning &quot;zoom in to this element&quot;. This is useful for pages with narrow columns and things on the sides, etc.<p>However, in order to implement this, when you do a <i>single</i> tap, the browser has to wait to make sure that you don&#x27;t do a double-tap. So there&#x27;s a 350ms delay while it&#x27;s waiting on your second tap, before delivering a single-tap event, e.g. to click on a link.<p>There&#x27;s a meta tag you can use to disable user control of the zoom level, e.g. with pinch-to-zoom. One of the things that this disables is the double-tap behavior. Given that double-tap is disabled on those websites, there&#x27;s no need to sit around waiting for a second tap; you can treat it as a single tap immediately. This change removes the delay.<p>(People are upset because this is an incentive to use that meta tag if you otherwise wouldn&#x27;t need it, and being able to zoom on a mobile browser is useful.)