I bought my first directory advertising at age 14. A business card size ad in "The Community Directory" for $125.00 per year. It was mailed to around 8,000 homes , got me a ton of lawn mowing jobs close enough that I could drive my riding lawnmower to , and helped expand my little enterprise. By the time I graduated from High School I had "real" yellowpage directory advertising. The quarter page ad would ring the phone off the hook in the spring & fall and keep myself and 6 helpers really business April -November. It was not unusual to sell enough new accounts to pay for a year of yellow page advertising by the end of March.
When I entered the carpet cleaning business I started off with a 1/2 page ad in two different directories and all though it was expensive it was my main source of leads for years. When the Internet went "mainstream" in 1999 and became easier to access for ordinary folks things started to change, but slowly. Around 5 years ago in our area the yellowpage became a dinosaur, today it is a decomposing dinosaur and people call in mass and request that it not be delivered to their home anymore. Like Saturday mail delivery it will soon disappear from our lives and not be missed. Who needs it when you can get better results with relatively FREE Internet advertising and have a decent website for $150 & $20 a year to host it. Right now one of my marketing efforts cost a whooping $480 per year and brings in more sales than $3,500 a month yellow pages ads were when I last ran them (about 5 years ago). Times have changed and the advertising industry is in denial, you can build a decent business today with a DSL line , $9.00 a month website and free Internet ads.
Soon you will see newspapers disappear along with the yellowpages. Major newspapers including the Washington Post, New York Times, and Chicago Tribune are in serious financial trouble and not expected to make it another 5 years.
Ten years after the internet became part of the common man's vernacular it was suddenly tough for them. Fifteen years into it and they will be gone. The vast majority of direct mail will disappear in another 10-20 years and home delivery will be gone in most of our lifetimes. All made obsolete by the net. I would never have guessed it and I'm still amazed at the changes it has brought about.
The only place I would run yellowpage ads today would be a rural area that is served by dial up exclusively and/ or has a population dominated by those 70 years of age or older.