I can still remember how excited I was when URLs first started appearing in IRL locations (billboards, magazines, etc), around 1996 or 97. At the time, of course, a lot of the people seeing them had no idea what they were....
At that time, I kept a physical log of all URLs I saw (by hands, even very long ones!), just in case I needed to visit the web site. I still have it but the addresses are no longer valid. :)