The Amazon Product Advertising PHP Library by Jan Eichhorn is based on PHP REST and SOAP using the Product Advertising API. It is made to be flexible for using built in operations (such as Item Search) or implemented operations to fit developers' needs.
Prosperent (quickly growing ad network) and CloudFlare (content delivery network focused on low touch app launches) have announced a partnership aimed at quickly monetizing websites without complicated development work. The partnership is simple, seems obvious, and should intrigue developers across many markets. Most importantly, the partnership should create new ways for anybody/any company with an online presence to make money. Check out the PW profiles for the Prosperent API and the CloudFlare API.
This week, Amazon announced Subscribe with Amazon. The offering is a subscription service for sellers of digital products and services. Through a series of APIs, subscription sellers can use Amazon infrastructure to offer products and services on monthly, quarterly, and yearly basis.
Kooaba offers image recognition through its Kooaba API, allowing you to compile metadata on objects in your photos. This can be used for product recognition and pricing, but could also be used to augment personal photo collections, which can be so large that they are nearly impossible to search by hand. There are tons of use cases for image recognition and this API should really open up the field and bring more applications to market.