Someone once described it as drops of rain. Each Add brings a drop which in tern turns in to a flood of work. The key is to use the right information in each add and to place those adds in the places which attract the customers you want. The way to determine this is to ask yourself who is my ideal customer, what do they want, where to they look when they want it and how can I convince them I have what they want. The answers to those questions will likely be different for everyone.