Here's a thing: at the time of writing, there's a fair to middling chance that your local multiplex will be showing the new Ridley Scott film, American Gangster. Go see it, and watch out for an early scene while the story's still in the late 1960s, in which Denzel Washington nips out to a phone box to make the first call to his Asian drug contact. Behind him, in several shots, we can see a large billboard clear as day. Unfortunately, I can't tell you exactly what the billboard was advertising, because I couldn't see past the SODDING ENORMOUS INTERNET ADDRESS AT THE BOTTOM OF IT.
Just to reiterate: late 1960s.
But that's Scott for you: a perfectionist.