Amazon launching its own PPC service, Clickriver Ads
Jumping into the Pay-Per-Click fray is Internet heavy weight, Amazon.
Clickriver Ads is an advertising program — currently in beta — that allows businesses to place sponsored links on Amazon.com®, next to search results and on product detail pages. Clickriver Ads presents a unique opportunity to advertise services and products that complement the selection on Amazon.com, an online marketplace with tens of millions of active customer accounts.
We welcome service providers of all types to apply to join the beta — in travel, finance and investment, training and education, entertainment, insurance, healthcare and physical fitness, IT assistance and consulting, photo printing and more. In addition, we welcome retailers who want to advertise products that complement those sold on Amazon.com.
For more info or to join beta testing program :
https://clickriver.com/advertiser/docs/about.html


