Commercial radio stations will sometimes fill up their advertising slots with a type of commercial known as Per Inquiry (PI). This type of advertising guarantees absolutely nothing up front, but the radio station does receive a commission when a listener uses an individualized toll free number to purchase the advertised product.
The reasons some radio (and television) stations accept this type of advertising is because there is the potential for revenue whereas that potential goes away if they choose not to accept this type of advertising.
This is the same premise behind affiliate revenue strategies online. In this scenario businesses offer other, secondary, website owners the potential to earn income when the secondary website is successfully used as a portal between the potential customer and the primary website.
In essence when you become an affiliate you are provided a means to track incoming traffic. If the individual purchasing a product started the process at your website then you will be credited for the sale. In turn, you will receive a commission for that sale. In an online environment this can be done hands-free.
Because you can only...