In the case of cost per mille/click, the publisher is not concerned about whether a visitor is a member of the audience that the advertiser tries to attract and is able to convert, because at this point the publisher has already earned his commission. This leaves the greater, and, in case of cost per mille, the full risk and loss (if the visitor cannot be converted) to the advertiser.
Funds—such as mutual funds, closed-end funds and exchange-traded funds—pool money from many investors and invest it according to a specific investment strategy. Funds can offer diversification, professional management and a wide variety of investment strategies and styles. But not all funds are the same. Understand how they work, and research fund fees and expenses.
You could try advertising more, for example, by putting up signs around the neighborhood, posting about it on social media, or having people you know spread the word. You could also try doing it in a different neighborhood that might have friendlier people, or do it in a time and place where there's likely to be a lot of people walking around the area (e.g., near a church before the end of a mass). https://buzzingofferbusinessinvesting.tumblr.com/