People judge websites quality in about a twentieth of a second. Which IS FASTER THAN WE ACTUALLY THINK. This is the reality of the interwebworld, first discovered almost five years ago when it was discovered that people could tell if a website was using frames or not BEFORE THEY EVEN CLICKED ON THE SITE.
So if it takes less than a twentieth of a second for us to be prejudiced against a website, why are there so many crap websites out there. My warning signs almost certainly come with the words “Loading” or “Click To Skip Intro”. Huzzah for the human brain developing new senses (I think we are up to twelve now).