Advertising is an important aspect of every business.
What advertising will yield the best results depends on your target market, while most advertising will provide a response, even if it is a small one, by identifying the best ways to reach your target market you can ensure you get more bang for your buck.
There are some broader spectrum options available such as magazines and newspapers that will give considerable results for a wide range of products and services. For these I have agreements with the publishers along the same lines as with the printing companies.