I partially disagree. My opinion is that the general public has learned to type the first letter/s of a site they've previously visited, into their browser url bar. The median Pinterest user on the Web is not going to Google to get to Pinterest.com, even if a small percentage of users do so. Typing those first letters into the browser has become radically more common for the typical user than using a search engine for sites they visit regularly. The majority of Web users have long since figured out that typing into the browser reveals sites from their history.