AD - Yellow Pages

I can't find a single copy of Yellow Pages directory in my office.
Who still use Yellow Pages directory?
Well, as throughout the rest of the world, the Yellow Pages directory was loosing ground to online directories.
Can i say, Yellow Pages not only old-fashioned but outdated?
As for me, i google search.
Now, look.. in order to get people using Yellow Pages directory again.. creative born out this concept.. aren't this is an interesting series of billboard :)