I am an advertiser. However, i have not advertised anything yet because all of the programs i've used are PPC based, which i disapprove. Do you know of any NON-PPC programs out there??
There are a few different models out there, all have their own benefits and disadvantages. The 2 primary alternatives to CPC are CPM and CPA. CPM will charge you for every 1000 impressions. This is good if your goal is brand recognition. So if you want people to recognize your brand when they come across it. You can use CPM as a CPC alternative, but it is risky, as you could get more or less clicks. CPA is much more expensive than CPC, but you only pay for what you want. For instance, if your CPA offer is for them to purchase your audio book, you would pay a lot more than your CPC rate, but you would only pay when they purchase your audio book. Of course, CPA is a lot harder to find willing participants for. You'll end up having to pay a lot more than CPC, since you are putting all the risk onto the publisher.