When you use Google to search for – anything – Google has tested your experience first. SEO pros natter on about spiders and robots so that you might think your website is only evaluated by machines. That isn’t necessarily true.
“A Page Quality (PQ) rating task consists of a URL and a series of questions designed to guide your exploration of the landing page and the website associated with the URL. Ultimately, the goal of Page Quality rating is to evaluate how well the page achieves its purpose. Because different types of websites and webpages can have very different purposes, our expectations and standards for different types of pages are also different.”
If you want to look at your site the way a Quality Tester does – download the guideline and try it yourself. It will rock your web surfing forever.