Fourth, advertising, in fact, this is one of the marketing strategy that comes with the invoice. You have to write a check to run an ad or direct mail, often before any results are seen from the experience of people shy away from because of advertising costs, because they don't know how to get results and they do not understand the impact the long term think about it if you know that for every $ 100 you spend, you can make $ 200, you will receive your checkbook and paying off for this (John Jantsch, 5 reason why you must advertise)