With so much going on in our World today it is nice to know that we as a society are focusing on the really important and relevant issues of the day like that billboard
To an extent - everyone has to play their role. It's not every person's calling to stop the war, or feed starving children in Ethiopia or teach illiterate kids to read.
The billboard is low-class and promotes something that is usually a very difficult and private issue. It once again lowers the value of commitment opens the door for similar if not more socially degrading advertisements like it.
I know, the easy response is just to say, "what's the big deal? It's not like a real adult could see that and have it be the catalyst to get a divorce." And you're
probably right. A key problem is that when you put something like that in wide open plain sight, you open the door for people of all ages to be able to read it. You start teaching any kid that can read that divorce isn't a big deal, and therfore marriage has less value as well.
I'm involved in an issue with my town right now (just outside of Chicago) over a billboard that says "Adult Toy Store - exit here." My niece is old enough to read (5) and asked to get off to go to the toy store and we had to explain, or lie rather, about what kind of toy store it is.
There are more classy and tactful ways to bring excitement and drum up business instead of preying on the lowest common denominator.