The ad ran for 1 month and generated enough revenue to just pay for the ad. The majority of the business that I received from this ad was for typing resumes and the customers did not require any additional work. It was not cost effective to repeat the ad for a second month. This year we ran an ad in a local publication that we thought fit our pool service customers perfectly. This paper catered to retired people with above average incomes, which describes our customers very well.
Advertising can be such a gamble.
If you put your advertising flyer on a public bulletin board you have no control over how long it will stay posted. It might be just five minutes before someone else comes along and posts a flyer over yours. You cannot predict the outcome at all, because you have no control. Many businesses have had good results after putting their flyer on car windshields. OK, so pursue free advertising opportunities whenever you find them but do not waste a lot of time on them.