I literally know nothing about UX, but I have to say a visit to UXPin's website instantly turned me off. First, they put this great big demand for my email front and center when I barely even know what their site is (and a single line explaining it is not enough to get me to sign up). The entire website is covered over with "modal grey" with no X box or anything else showing me I can close it, just some links at the top that are not obviously clickable because of the grey modal. Turns out it isn't a modal at all you can just scroll down (no indication of that) and that the small links are clickable. Once I was past that, it was fine and dandy, but if I were actually interested in being a customer rather than a curious person trying to figure out what I was missing, I probably would have just left.