[morleymouse]

seo for one

social networking

word of mouth

PPC is the quick win, you bid, you buy, you get. Then you work out if its working or not and carry on or stop. The others take more time. If you invest a couple of grand in some good SEO content, and spend X hours of your time working with it, building links etc chances are you wont be able to measure the ROI for months.

If you think you've taken ppc as far as you can though its well worth looking at some other advertising channels. Remember, just because its affiliate marketing doesn't mean it has to be online